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Finding the Fourth Proportional to 92,124.59, 138,072.66 and 65,428.01

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Solution

The fourth proportional to 92,124.59, 138,072.66 and 65,428.01 is: 98,060.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,124.59 : 138,072.66 = 65,428.01 : x
  2. Step 2: Convert to fraction form
    92,124.59/138,072.66 = 65,428.01/x
  3. Step 3: Cross multiply
    92,124.59x = 138,072.66 × 65,428.01
  4. Step 4: Simplify right side
    92,124.59x = 9,033,819,379.21
  5. Step 5: Solve for x
    x = 9,033,819,379.21/92,124.59
  6. Step 6: Final answer
    x = 98,060.89

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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.