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Finding the Fourth Proportional to 630,117.60, 945,176.40 and 575,005.20

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Solution

The fourth proportional to 630,117.60, 945,176.40 and 575,005.20 is: 862,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,117.60 : 945,176.40 = 575,005.20 : x
  2. Step 2: Convert to fraction form
    630,117.60/945,176.40 = 575,005.20/x
  3. Step 3: Cross multiply
    630,117.60x = 945,176.40 × 575,005.20
  4. Step 4: Simplify right side
    630,117.60x = 543,481,344,917.28
  5. Step 5: Solve for x
    x = 543,481,344,917.28/630,117.60
  6. Step 6: Final answer
    x = 862,507.80

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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.