Home / 70,527,909.20-105,791,863.80-18,712,411.70

Finding the Fourth Proportional to 70,527,909.20, 105,791,863.80 and 18,712,411.70

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Solution

The fourth proportional to 70,527,909.20, 105,791,863.80 and 18,712,411.70 is: 28,068,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,527,909.20 : 105,791,863.80 = 18,712,411.70 : x
  2. Step 2: Convert to fraction form
    70,527,909.20/105,791,863.80 = 18,712,411.70/x
  3. Step 3: Cross multiply
    70,527,909.20x = 105,791,863.80 × 18,712,411.70
  4. Step 4: Simplify right side
    70,527,909.20x = 1,979,620,909,935,926.25
  5. Step 5: Solve for x
    x = 1,979,620,909,935,926.25/70,527,909.20
  6. Step 6: Final answer
    x = 28,068,617.55

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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.