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Finding the Fourth Proportional to 71,358,509.20, 100,103,466.80 and 71,358,509.20

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Solution

The fourth proportional to 71,358,509.20, 100,103,466.80 and 71,358,509.20 is: 100,103,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,358,509.20 : 100,103,466.80 = 71,358,509.20 : x
  2. Step 2: Convert to fraction form
    71,358,509.20/100,103,466.80 = 71,358,509.20/x
  3. Step 3: Cross multiply
    71,358,509.20x = 100,103,466.80 × 71,358,509.20
  4. Step 4: Simplify right side
    71,358,509.20x = 7,143,234,156,599,695
  5. Step 5: Solve for x
    x = 7,143,234,156,599,695/71,358,509.20
  6. Step 6: Final answer
    x = 100,103,466.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.