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Finding the Fourth Proportional to 60,814.68, 91,250.90 and 42,123.48

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Solution

The fourth proportional to 60,814.68, 91,250.90 and 42,123.48 is: 63,205.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,814.68 : 91,250.90 = 42,123.48 : x
  2. Step 2: Convert to fraction form
    60,814.68/91,250.90 = 42,123.48/x
  3. Step 3: Cross multiply
    60,814.68x = 91,250.90 × 42,123.48
  4. Step 4: Simplify right side
    60,814.68x = 3,843,805,461.13
  5. Step 5: Solve for x
    x = 3,843,805,461.13/60,814.68
  6. Step 6: Final answer
    x = 63,205.22

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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.