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Finding the Fourth Proportional to 697,009.66, 961,814.35 and 391,044.71

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Solution

The fourth proportional to 697,009.66, 961,814.35 and 391,044.71 is: 539,608.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,009.66 : 961,814.35 = 391,044.71 : x
  2. Step 2: Convert to fraction form
    697,009.66/961,814.35 = 391,044.71/x
  3. Step 3: Cross multiply
    697,009.66x = 961,814.35 × 391,044.71
  4. Step 4: Simplify right side
    697,009.66x = 376,112,416,462.93
  5. Step 5: Solve for x
    x = 376,112,416,462.93/697,009.66
  6. Step 6: Final answer
    x = 539,608.62

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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.