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Finding the Fourth Proportional to 70,454,620.80, 98,434,915.20 and 70,454,620.80

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Solution

The fourth proportional to 70,454,620.80, 98,434,915.20 and 70,454,620.80 is: 98,434,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,454,620.80 : 98,434,915.20 = 70,454,620.80 : x
  2. Step 2: Convert to fraction form
    70,454,620.80/98,434,915.20 = 70,454,620.80/x
  3. Step 3: Cross multiply
    70,454,620.80x = 98,434,915.20 × 70,454,620.80
  4. Step 4: Simplify right side
    70,454,620.80x = 6,935,194,623,896,156
  5. Step 5: Solve for x
    x = 6,935,194,623,896,156/70,454,620.80
  6. Step 6: Final answer
    x = 98,434,915.20

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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.