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Finding the Fourth Proportional to 633,972.47, 874,971.71 and 392,332.86

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Solution

The fourth proportional to 633,972.47, 874,971.71 and 392,332.86 is: 541,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,972.47 : 874,971.71 = 392,332.86 : x
  2. Step 2: Convert to fraction form
    633,972.47/874,971.71 = 392,332.86/x
  3. Step 3: Cross multiply
    633,972.47x = 874,971.71 × 392,332.86
  4. Step 4: Simplify right side
    633,972.47x = 343,280,154,384.22
  5. Step 5: Solve for x
    x = 343,280,154,384.22/633,972.47
  6. Step 6: Final answer
    x = 541,474.86

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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.