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Finding the Fourth Proportional to 717,072.66, 989,618.19 and 411,177.57

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Solution

The fourth proportional to 717,072.66, 989,618.19 and 411,177.57 is: 567,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,072.66 : 989,618.19 = 411,177.57 : x
  2. Step 2: Convert to fraction form
    717,072.66/989,618.19 = 411,177.57/x
  3. Step 3: Cross multiply
    717,072.66x = 989,618.19 × 411,177.57
  4. Step 4: Simplify right side
    717,072.66x = 406,908,802,592.00
  5. Step 5: Solve for x
    x = 406,908,802,592.00/717,072.66
  6. Step 6: Final answer
    x = 567,458.26

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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.