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Finding the Fourth Proportional to 92,122.59, 138,069.66 and 65,426.01

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Solution

The fourth proportional to 92,122.59, 138,069.66 and 65,426.01 is: 98,057.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,122.59 : 138,069.66 = 65,426.01 : x
  2. Step 2: Convert to fraction form
    92,122.59/138,069.66 = 65,426.01/x
  3. Step 3: Cross multiply
    92,122.59x = 138,069.66 × 65,426.01
  4. Step 4: Simplify right side
    92,122.59x = 9,033,346,955.86
  5. Step 5: Solve for x
    x = 9,033,346,955.86/92,122.59
  6. Step 6: Final answer
    x = 98,057.89

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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.