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Finding the Fourth Proportional to 630,107.10, 945,160.65 and 621,812.70

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Solution

The fourth proportional to 630,107.10, 945,160.65 and 621,812.70 is: 932,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,107.10 : 945,160.65 = 621,812.70 : x
  2. Step 2: Convert to fraction form
    630,107.10/945,160.65 = 621,812.70/x
  3. Step 3: Cross multiply
    630,107.10x = 945,160.65 × 621,812.70
  4. Step 4: Simplify right side
    630,107.10x = 587,712,895,710.26
  5. Step 5: Solve for x
    x = 587,712,895,710.26/630,107.10
  6. Step 6: Final answer
    x = 932,719.05

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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.