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Finding the Fourth Proportional to 443,418.16, 611,921.10 and 252,443.92

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Solution

The fourth proportional to 443,418.16, 611,921.10 and 252,443.92 is: 348,374.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,418.16 : 611,921.10 = 252,443.92 : x
  2. Step 2: Convert to fraction form
    443,418.16/611,921.10 = 252,443.92/x
  3. Step 3: Cross multiply
    443,418.16x = 611,921.10 × 252,443.92
  4. Step 4: Simplify right side
    443,418.16x = 154,475,761,214.71
  5. Step 5: Solve for x
    x = 154,475,761,214.71/443,418.16
  6. Step 6: Final answer
    x = 348,374.91

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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.