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Finding the Fourth Proportional to 691,549.80, 954,411.30 and 521,514.60

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Solution

The fourth proportional to 691,549.80, 954,411.30 and 521,514.60 is: 719,744.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,549.80 : 954,411.30 = 521,514.60 : x
  2. Step 2: Convert to fraction form
    691,549.80/954,411.30 = 521,514.60/x
  3. Step 3: Cross multiply
    691,549.80x = 954,411.30 × 521,514.60
  4. Step 4: Simplify right side
    691,549.80x = 497,739,427,354.98
  5. Step 5: Solve for x
    x = 497,739,427,354.98/691,549.80
  6. Step 6: Final answer
    x = 719,744.88

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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.