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Finding the Fourth Proportional to 66,532,652.80, 99,798,979.20 and 43,574,401.60

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Solution

The fourth proportional to 66,532,652.80, 99,798,979.20 and 43,574,401.60 is: 65,361,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,532,652.80 : 99,798,979.20 = 43,574,401.60 : x
  2. Step 2: Convert to fraction form
    66,532,652.80/99,798,979.20 = 43,574,401.60/x
  3. Step 3: Cross multiply
    66,532,652.80x = 99,798,979.20 × 43,574,401.60
  4. Step 4: Simplify right side
    66,532,652.80x = 4,348,680,798,930,847
  5. Step 5: Solve for x
    x = 4,348,680,798,930,847/66,532,652.80
  6. Step 6: Final answer
    x = 65,361,602.40

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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.