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Finding the Fourth Proportional to 367,860.62, 551,931.03 and 128,001.17

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Solution

The fourth proportional to 367,860.62, 551,931.03 and 128,001.17 is: 192,050.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,860.62 : 551,931.03 = 128,001.17 : x
  2. Step 2: Convert to fraction form
    367,860.62/551,931.03 = 128,001.17/x
  3. Step 3: Cross multiply
    367,860.62x = 551,931.03 × 128,001.17
  4. Step 4: Simplify right side
    367,860.62x = 70,647,817,599.31
  5. Step 5: Solve for x
    x = 70,647,817,599.31/367,860.62
  6. Step 6: Final answer
    x = 192,050.50

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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.