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Finding the Fourth Proportional to 92,588.47, 138,941.08 and 36,421.28

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Solution

The fourth proportional to 92,588.47, 138,941.08 and 36,421.28 is: 54,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,588.47 : 138,941.08 = 36,421.28 : x
  2. Step 2: Convert to fraction form
    92,588.47/138,941.08 = 36,421.28/x
  3. Step 3: Cross multiply
    92,588.47x = 138,941.08 × 36,421.28
  4. Step 4: Simplify right side
    92,588.47x = 5,060,411,657.81
  5. Step 5: Solve for x
    x = 5,060,411,657.81/92,588.47
  6. Step 6: Final answer
    x = 54,654.88

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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.