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Finding the Fourth Proportional to 467,381, 644,985.78 and 252,521.12

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Solution

The fourth proportional to 467,381, 644,985.78 and 252,521.12 is: 348,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,381 : 644,985.78 = 252,521.12 : x
  2. Step 2: Convert to fraction form
    467,381/644,985.78 = 252,521.12/x
  3. Step 3: Cross multiply
    467,381x = 644,985.78 × 252,521.12
  4. Step 4: Simplify right side
    467,381x = 162,872,531,549.67
  5. Step 5: Solve for x
    x = 162,872,531,549.67/467,381
  6. Step 6: Final answer
    x = 348,479.15

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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.