Home / 128,176,705.90-176,882,876.44-69,438,950.83

Finding the Fourth Proportional to 128,176,705.90, 176,882,876.44 and 69,438,950.83

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Solution

The fourth proportional to 128,176,705.90, 176,882,876.44 and 69,438,950.83 is: 95,825,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176,705.90 : 176,882,876.44 = 69,438,950.83 : x
  2. Step 2: Convert to fraction form
    128,176,705.90/176,882,876.44 = 69,438,950.83/x
  3. Step 3: Cross multiply
    128,176,705.90x = 176,882,876.44 × 69,438,950.83
  4. Step 4: Simplify right side
    128,176,705.90x = 12,282,561,359,786,124
  5. Step 5: Solve for x
    x = 12,282,561,359,786,124/128,176,705.90
  6. Step 6: Final answer
    x = 95,825,222.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.