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Finding the Fourth Proportional to 91,867,647.80, 137,801,471.70 and 77,997,037.70

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Solution

The fourth proportional to 91,867,647.80, 137,801,471.70 and 77,997,037.70 is: 116,995,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,867,647.80 : 137,801,471.70 = 77,997,037.70 : x
  2. Step 2: Convert to fraction form
    91,867,647.80/137,801,471.70 = 77,997,037.70/x
  3. Step 3: Cross multiply
    91,867,647.80x = 137,801,471.70 × 77,997,037.70
  4. Step 4: Simplify right side
    91,867,647.80x = 10,748,106,583,300,382
  5. Step 5: Solve for x
    x = 10,748,106,583,300,382/91,867,647.80
  6. Step 6: Final answer
    x = 116,995,556.55

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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.