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Finding the Fourth Proportional to 520,969.38, 718,967.88 and 291,524.66

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Solution

The fourth proportional to 520,969.38, 718,967.88 and 291,524.66 is: 402,320.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,969.38 : 718,967.88 = 291,524.66 : x
  2. Step 2: Convert to fraction form
    520,969.38/718,967.88 = 291,524.66/x
  3. Step 3: Cross multiply
    520,969.38x = 718,967.88 × 291,524.66
  4. Step 4: Simplify right side
    520,969.38x = 209,596,866,767.92
  5. Step 5: Solve for x
    x = 209,596,866,767.92/520,969.38
  6. Step 6: Final answer
    x = 402,320.89

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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.