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Finding the Fourth Proportional to 60,672,700.80, 91,009,051.20 and 40,265,366.40

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Solution

The fourth proportional to 60,672,700.80, 91,009,051.20 and 40,265,366.40 is: 60,398,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,672,700.80 : 91,009,051.20 = 40,265,366.40 : x
  2. Step 2: Convert to fraction form
    60,672,700.80/91,009,051.20 = 40,265,366.40/x
  3. Step 3: Cross multiply
    60,672,700.80x = 91,009,051.20 × 40,265,366.40
  4. Step 4: Simplify right side
    60,672,700.80x = 3,664,512,792,284,359.50
  5. Step 5: Solve for x
    x = 3,664,512,792,284,359.50/60,672,700.80
  6. Step 6: Final answer
    x = 60,398,049.60

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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.