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Finding the Fourth Proportional to 67,952,209.40, 101,928,314.10 and 42,471,812.60

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Solution

The fourth proportional to 67,952,209.40, 101,928,314.10 and 42,471,812.60 is: 63,707,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,952,209.40 : 101,928,314.10 = 42,471,812.60 : x
  2. Step 2: Convert to fraction form
    67,952,209.40/101,928,314.10 = 42,471,812.60/x
  3. Step 3: Cross multiply
    67,952,209.40x = 101,928,314.10 × 42,471,812.60
  4. Step 4: Simplify right side
    67,952,209.40x = 4,329,080,255,089,137.50
  5. Step 5: Solve for x
    x = 4,329,080,255,089,137.50/67,952,209.40
  6. Step 6: Final answer
    x = 63,707,718.90

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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.