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Finding the Fourth Proportional to 83,007.40, 124,316.70 and 63,178.60

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Solution

The fourth proportional to 83,007.40, 124,316.70 and 63,178.60 is: 94,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,007.40 : 124,316.70 = 63,178.60 : x
  2. Step 2: Convert to fraction form
    83,007.40/124,316.70 = 63,178.60/x
  3. Step 3: Cross multiply
    83,007.40x = 124,316.70 × 63,178.60
  4. Step 4: Simplify right side
    83,007.40x = 7,854,155,062.62
  5. Step 5: Solve for x
    x = 7,854,155,062.62/83,007.40
  6. Step 6: Final answer
    x = 94,619.94

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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.