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Finding the Fourth Proportional to 587,783.40, 881,675.10 and 307,386.60

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Solution

The fourth proportional to 587,783.40, 881,675.10 and 307,386.60 is: 461,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,783.40 : 881,675.10 = 307,386.60 : x
  2. Step 2: Convert to fraction form
    587,783.40/881,675.10 = 307,386.60/x
  3. Step 3: Cross multiply
    587,783.40x = 881,675.10 × 307,386.60
  4. Step 4: Simplify right side
    587,783.40x = 271,015,111,293.66
  5. Step 5: Solve for x
    x = 271,015,111,293.66/587,783.40
  6. Step 6: Final answer
    x = 461,079.90

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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.