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Finding the Fourth Proportional to 62,710.40, 93,919.80 and 42,881.60

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Solution

The fourth proportional to 62,710.40, 93,919.80 and 42,881.60 is: 64,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,710.40 : 93,919.80 = 42,881.60 : x
  2. Step 2: Convert to fraction form
    62,710.40/93,919.80 = 42,881.60/x
  3. Step 3: Cross multiply
    62,710.40x = 93,919.80 × 42,881.60
  4. Step 4: Simplify right side
    62,710.40x = 4,027,431,295.68
  5. Step 5: Solve for x
    x = 4,027,431,295.68/62,710.40
  6. Step 6: Final answer
    x = 64,222.70

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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.