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Finding the Fourth Proportional to 315,551.18, 472,976.17 and 240,423.66

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Solution

The fourth proportional to 315,551.18, 472,976.17 and 240,423.66 is: 360,368.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,551.18 : 472,976.17 = 240,423.66 : x
  2. Step 2: Convert to fraction form
    315,551.18/472,976.17 = 240,423.66/x
  3. Step 3: Cross multiply
    315,551.18x = 472,976.17 × 240,423.66
  4. Step 4: Simplify right side
    315,551.18x = 113,714,661,283.12
  5. Step 5: Solve for x
    x = 113,714,661,283.12/315,551.18
  6. Step 6: Final answer
    x = 360,368.36

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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.