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Finding the Fourth Proportional to 73,412.60, 110,349.30 and 72,030.20

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Solution

The fourth proportional to 73,412.60, 110,349.30 and 72,030.20 is: 108,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,412.60 : 110,349.30 = 72,030.20 : x
  2. Step 2: Convert to fraction form
    73,412.60/110,349.30 = 72,030.20/x
  3. Step 3: Cross multiply
    73,412.60x = 110,349.30 × 72,030.20
  4. Step 4: Simplify right side
    73,412.60x = 7,948,482,148.86
  5. Step 5: Solve for x
    x = 7,948,482,148.86/73,412.60
  6. Step 6: Final answer
    x = 108,271.36

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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.