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Finding the Fourth Proportional to 424,894.09, 637,358.72 and 125,374.66

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Solution

The fourth proportional to 424,894.09, 637,358.72 and 125,374.66 is: 188,067.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,894.09 : 637,358.72 = 125,374.66 : x
  2. Step 2: Convert to fraction form
    424,894.09/637,358.72 = 125,374.66/x
  3. Step 3: Cross multiply
    424,894.09x = 637,358.72 × 125,374.66
  4. Step 4: Simplify right side
    424,894.09x = 79,908,634,724.87
  5. Step 5: Solve for x
    x = 79,908,634,724.87/424,894.09
  6. Step 6: Final answer
    x = 188,067.18

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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.