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Finding the Fourth Proportional to 70,872,065.60, 99,489,630.40 and 70,872,065.60

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Solution

The fourth proportional to 70,872,065.60, 99,489,630.40 and 70,872,065.60 is: 99,489,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,872,065.60 : 99,489,630.40 = 70,872,065.60 : x
  2. Step 2: Convert to fraction form
    70,872,065.60/99,489,630.40 = 70,872,065.60/x
  3. Step 3: Cross multiply
    70,872,065.60x = 99,489,630.40 × 70,872,065.60
  4. Step 4: Simplify right side
    70,872,065.60x = 7,051,035,612,228,554
  5. Step 5: Solve for x
    x = 7,051,035,612,228,554/70,872,065.60
  6. Step 6: Final answer
    x = 99,489,630.40

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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.