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Finding the Fourth Proportional to 316,646.57, 474,966.77 and 136,859.15

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Solution

The fourth proportional to 316,646.57, 474,966.77 and 136,859.15 is: 205,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,646.57 : 474,966.77 = 136,859.15 : x
  2. Step 2: Convert to fraction form
    316,646.57/474,966.77 = 136,859.15/x
  3. Step 3: Cross multiply
    316,646.57x = 474,966.77 × 136,859.15
  4. Step 4: Simplify right side
    316,646.57x = 65,003,545,361.32
  5. Step 5: Solve for x
    x = 65,003,545,361.32/316,646.57
  6. Step 6: Final answer
    x = 205,287.39

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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.