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Finding the Fourth Proportional to 706,695.70, 1,057,451.55 and 520,071.70

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Solution

The fourth proportional to 706,695.70, 1,057,451.55 and 520,071.70 is: 778,200.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,695.70 : 1,057,451.55 = 520,071.70 : x
  2. Step 2: Convert to fraction form
    706,695.70/1,057,451.55 = 520,071.70/x
  3. Step 3: Cross multiply
    706,695.70x = 1,057,451.55 × 520,071.70
  4. Step 4: Simplify right side
    706,695.70x = 549,950,625,276.14
  5. Step 5: Solve for x
    x = 549,950,625,276.14/706,695.70
  6. Step 6: Final answer
    x = 778,200.04

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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.