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Finding the Fourth Proportional to 124,877.70, 187,316.55 and 112,824.90

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Solution

The fourth proportional to 124,877.70, 187,316.55 and 112,824.90 is: 169,237.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,877.70 : 187,316.55 = 112,824.90 : x
  2. Step 2: Convert to fraction form
    124,877.70/187,316.55 = 112,824.90/x
  3. Step 3: Cross multiply
    124,877.70x = 187,316.55 × 112,824.90
  4. Step 4: Simplify right side
    124,877.70x = 21,133,971,022.10
  5. Step 5: Solve for x
    x = 21,133,971,022.10/124,877.70
  6. Step 6: Final answer
    x = 169,237.35

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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.