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Finding the Fourth Proportional to 691,209.86, 953,889.82 and 404,703.14

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Solution

The fourth proportional to 691,209.86, 953,889.82 and 404,703.14 is: 558,502.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,209.86 : 953,889.82 = 404,703.14 : x
  2. Step 2: Convert to fraction form
    691,209.86/953,889.82 = 404,703.14/x
  3. Step 3: Cross multiply
    691,209.86x = 953,889.82 × 404,703.14
  4. Step 4: Simplify right side
    691,209.86x = 386,042,199,586.83
  5. Step 5: Solve for x
    x = 386,042,199,586.83/691,209.86
  6. Step 6: Final answer
    x = 558,502.16

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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.