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Finding the Fourth Proportional to 73,207.60, 109,811.40 and 61,397.80

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Solution

The fourth proportional to 73,207.60, 109,811.40 and 61,397.80 is: 92,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,207.60 : 109,811.40 = 61,397.80 : x
  2. Step 2: Convert to fraction form
    73,207.60/109,811.40 = 61,397.80/x
  3. Step 3: Cross multiply
    73,207.60x = 109,811.40 × 61,397.80
  4. Step 4: Simplify right side
    73,207.60x = 6,742,178,374.92
  5. Step 5: Solve for x
    x = 6,742,178,374.92/73,207.60
  6. Step 6: Final answer
    x = 92,096.70

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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.