Home / 128,259,902.88-176,993,924.08-69,521,306.84

Finding the Fourth Proportional to 128,259,902.88, 176,993,924.08 and 69,521,306.84

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Solution

The fourth proportional to 128,259,902.88, 176,993,924.08 and 69,521,306.84 is: 95,936,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259,902.88 : 176,993,924.08 = 69,521,306.84 : x
  2. Step 2: Convert to fraction form
    128,259,902.88/176,993,924.08 = 69,521,306.84/x
  3. Step 3: Cross multiply
    128,259,902.88x = 176,993,924.08 × 69,521,306.84
  4. Step 4: Simplify right side
    128,259,902.88x = 12,304,848,904,781,346
  5. Step 5: Solve for x
    x = 12,304,848,904,781,346/128,259,902.88
  6. Step 6: Final answer
    x = 95,936,833.17

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1.5x scale

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.