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Finding the Fourth Proportional to 92,687,956.80, 139,094,920.80 and 51,747,316.80

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Solution

The fourth proportional to 92,687,956.80, 139,094,920.80 and 51,747,316.80 is: 77,656,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,687,956.80 : 139,094,920.80 = 51,747,316.80 : x
  2. Step 2: Convert to fraction form
    92,687,956.80/139,094,920.80 = 51,747,316.80/x
  3. Step 3: Cross multiply
    92,687,956.80x = 139,094,920.80 × 51,747,316.80
  4. Step 4: Simplify right side
    92,687,956.80x = 7,197,788,931,908,510
  5. Step 5: Solve for x
    x = 7,197,788,931,908,510/92,687,956.80
  6. Step 6: Final answer
    x = 77,656,139.81

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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.