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Finding the Fourth Proportional to 663,247.40, 915,976.10 and 457,051.92

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Solution

The fourth proportional to 663,247.40, 915,976.10 and 457,051.92 is: 631,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,247.40 : 915,976.10 = 457,051.92 : x
  2. Step 2: Convert to fraction form
    663,247.40/915,976.10 = 457,051.92/x
  3. Step 3: Cross multiply
    663,247.40x = 915,976.10 × 457,051.92
  4. Step 4: Simplify right side
    663,247.40x = 418,648,635,179.11
  5. Step 5: Solve for x
    x = 418,648,635,179.11/663,247.40
  6. Step 6: Final answer
    x = 631,210.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.