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Finding the Fourth Proportional to 70,581,601.80, 105,872,402.70 and 25,144,878.60

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Solution

The fourth proportional to 70,581,601.80, 105,872,402.70 and 25,144,878.60 is: 37,717,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,581,601.80 : 105,872,402.70 = 25,144,878.60 : x
  2. Step 2: Convert to fraction form
    70,581,601.80/105,872,402.70 = 25,144,878.60/x
  3. Step 3: Cross multiply
    70,581,601.80x = 105,872,402.70 × 25,144,878.60
  4. Step 4: Simplify right side
    70,581,601.80x = 2,662,148,712,981,812.50
  5. Step 5: Solve for x
    x = 2,662,148,712,981,812.50/70,581,601.80
  6. Step 6: Final answer
    x = 37,717,317.90

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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.