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Finding the Fourth Proportional to 663,014.10, 914,963.12 and 387,388.14

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Solution

The fourth proportional to 663,014.10, 914,963.12 and 387,388.14 is: 534,597.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,014.10 : 914,963.12 = 387,388.14 : x
  2. Step 2: Convert to fraction form
    663,014.10/914,963.12 = 387,388.14/x
  3. Step 3: Cross multiply
    663,014.10x = 914,963.12 × 387,388.14
  4. Step 4: Simplify right side
    663,014.10x = 354,445,859,288.46
  5. Step 5: Solve for x
    x = 354,445,859,288.46/663,014.10
  6. Step 6: Final answer
    x = 534,597.77

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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.