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Finding the Fourth Proportional to 66,451,931.20, 99,696,559.20 and 32,374,388.80

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Solution

The fourth proportional to 66,451,931.20, 99,696,559.20 and 32,374,388.80 is: 48,570,675.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,451,931.20 : 99,696,559.20 = 32,374,388.80 : x
  2. Step 2: Convert to fraction form
    66,451,931.20/99,696,559.20 = 32,374,388.80/x
  3. Step 3: Cross multiply
    66,451,931.20x = 99,696,559.20 × 32,374,388.80
  4. Step 4: Simplify right side
    66,451,931.20x = 3,227,615,169,563,017
  5. Step 5: Solve for x
    x = 3,227,615,169,563,017/66,451,931.20
  6. Step 6: Final answer
    x = 48,570,675.24

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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.