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Finding the Fourth Proportional to 52,356.64, 72,239.88 and 29,690.68

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Solution

The fourth proportional to 52,356.64, 72,239.88 and 29,690.68 is: 40,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,356.64 : 72,239.88 = 29,690.68 : x
  2. Step 2: Convert to fraction form
    52,356.64/72,239.88 = 29,690.68/x
  3. Step 3: Cross multiply
    52,356.64x = 72,239.88 × 29,690.68
  4. Step 4: Simplify right side
    52,356.64x = 2,144,851,160.32
  5. Step 5: Solve for x
    x = 2,144,851,160.32/52,356.64
  6. Step 6: Final answer
    x = 40,966.17

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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.