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Finding the Fourth Proportional to 66,528,821.80, 99,793,232.70 and 32,472,015.40

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Solution

The fourth proportional to 66,528,821.80, 99,793,232.70 and 32,472,015.40 is: 48,708,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528,821.80 : 99,793,232.70 = 32,472,015.40 : x
  2. Step 2: Convert to fraction form
    66,528,821.80/99,793,232.70 = 32,472,015.40/x
  3. Step 3: Cross multiply
    66,528,821.80x = 99,793,232.70 × 32,472,015.40
  4. Step 4: Simplify right side
    66,528,821.80x = 3,240,487,389,050,183.50
  5. Step 5: Solve for x
    x = 3,240,487,389,050,183.50/66,528,821.80
  6. Step 6: Final answer
    x = 48,708,023.10

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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.