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Finding the Fourth Proportional to 70,454,750.40, 105,676,876.80 and 29,503,612.80

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Solution

The fourth proportional to 70,454,750.40, 105,676,876.80 and 29,503,612.80 is: 44,253,221.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,454,750.40 : 105,676,876.80 = 29,503,612.80 : x
  2. Step 2: Convert to fraction form
    70,454,750.40/105,676,876.80 = 29,503,612.80/x
  3. Step 3: Cross multiply
    70,454,750.40x = 105,676,876.80 × 29,503,612.80
  4. Step 4: Simplify right side
    70,454,750.40x = 3,117,849,655,020,503
  5. Step 5: Solve for x
    x = 3,117,849,655,020,503/70,454,750.40
  6. Step 6: Final answer
    x = 44,253,221.21

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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.