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Finding the Fourth Proportional to 95,443.60, 142,873.80 and 74,448.40

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Solution

The fourth proportional to 95,443.60, 142,873.80 and 74,448.40 is: 111,445.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,443.60 : 142,873.80 = 74,448.40 : x
  2. Step 2: Convert to fraction form
    95,443.60/142,873.80 = 74,448.40/x
  3. Step 3: Cross multiply
    95,443.60x = 142,873.80 × 74,448.40
  4. Step 4: Simplify right side
    95,443.60x = 10,636,725,811.92
  5. Step 5: Solve for x
    x = 10,636,725,811.92/95,443.60
  6. Step 6: Final answer
    x = 111,445.14

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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.