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Finding the Fourth Proportional to 481,142,309.60, 721,713,464.40 and 481,142,309.60

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Solution

The fourth proportional to 481,142,309.60, 721,713,464.40 and 481,142,309.60 is: 721,713,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,142,309.60 : 721,713,464.40 = 481,142,309.60 : x
  2. Step 2: Convert to fraction form
    481,142,309.60/721,713,464.40 = 481,142,309.60/x
  3. Step 3: Cross multiply
    481,142,309.60x = 721,713,464.40 × 481,142,309.60
  4. Step 4: Simplify right side
    481,142,309.60x = 347,246,883,130,833,408
  5. Step 5: Solve for x
    x = 347,246,883,130,833,408/481,142,309.60
  6. Step 6: Final answer
    x = 721,713,464.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.