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Finding the Fourth Proportional to 78,895,366.20, 118,343,049.30 and 78,895,366.20

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Solution

The fourth proportional to 78,895,366.20, 118,343,049.30 and 78,895,366.20 is: 118,343,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,895,366.20 : 118,343,049.30 = 78,895,366.20 : x
  2. Step 2: Convert to fraction form
    78,895,366.20/118,343,049.30 = 78,895,366.20/x
  3. Step 3: Cross multiply
    78,895,366.20x = 118,343,049.30 × 78,895,366.20
  4. Step 4: Simplify right side
    78,895,366.20x = 9,336,718,211,748,154
  5. Step 5: Solve for x
    x = 9,336,718,211,748,154/78,895,366.20
  6. Step 6: Final answer
    x = 118,343,049.30

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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.