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Finding the Fourth Proportional to 706,687.70, 1,057,439.55 and 520,063.70

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Solution

The fourth proportional to 706,687.70, 1,057,439.55 and 520,063.70 is: 778,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,687.70 : 1,057,439.55 = 520,063.70 : x
  2. Step 2: Convert to fraction form
    706,687.70/1,057,439.55 = 520,063.70/x
  3. Step 3: Cross multiply
    706,687.70x = 1,057,439.55 × 520,063.70
  4. Step 4: Simplify right side
    706,687.70x = 549,935,924,899.34
  5. Step 5: Solve for x
    x = 549,935,924,899.34/706,687.70
  6. Step 6: Final answer
    x = 778,188.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.