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Finding the Fourth Proportional to 693,809.52, 957,475.80 and 391,997.04

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Solution

The fourth proportional to 693,809.52, 957,475.80 and 391,997.04 is: 540,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,809.52 : 957,475.80 = 391,997.04 : x
  2. Step 2: Convert to fraction form
    693,809.52/957,475.80 = 391,997.04/x
  3. Step 3: Cross multiply
    693,809.52x = 957,475.80 × 391,997.04
  4. Step 4: Simplify right side
    693,809.52x = 375,327,679,471.63
  5. Step 5: Solve for x
    x = 375,327,679,471.63/693,809.52
  6. Step 6: Final answer
    x = 540,966.46

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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.