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Finding the Fourth Proportional to 58,742.88, 88,076.88 and 38,729.28

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Solution

The fourth proportional to 58,742.88, 88,076.88 and 38,729.28 is: 58,069.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,742.88 : 88,076.88 = 38,729.28 : x
  2. Step 2: Convert to fraction form
    58,742.88/88,076.88 = 38,729.28/x
  3. Step 3: Cross multiply
    58,742.88x = 88,076.88 × 38,729.28
  4. Step 4: Simplify right side
    58,742.88x = 3,411,154,147.05
  5. Step 5: Solve for x
    x = 3,411,154,147.05/58,742.88
  6. Step 6: Final answer
    x = 58,069.24

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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.