Home / 128,776,604.10-193,164,906.15-77,632,296.90

Finding the Fourth Proportional to 128,776,604.10, 193,164,906.15 and 77,632,296.90

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Solution

The fourth proportional to 128,776,604.10, 193,164,906.15 and 77,632,296.90 is: 116,448,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,776,604.10 : 193,164,906.15 = 77,632,296.90 : x
  2. Step 2: Convert to fraction form
    128,776,604.10/193,164,906.15 = 77,632,296.90/x
  3. Step 3: Cross multiply
    128,776,604.10x = 193,164,906.15 × 77,632,296.90
  4. Step 4: Simplify right side
    128,776,604.10x = 14,995,835,344,897,438
  5. Step 5: Solve for x
    x = 14,995,835,344,897,438/128,776,604.10
  6. Step 6: Final answer
    x = 116,448,445.35

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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.