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Finding the Fourth Proportional to 692,422.56, 955,702.55 and 406,034.91

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Solution

The fourth proportional to 692,422.56, 955,702.55 and 406,034.91 is: 560,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,422.56 : 955,702.55 = 406,034.91 : x
  2. Step 2: Convert to fraction form
    692,422.56/955,702.55 = 406,034.91/x
  3. Step 3: Cross multiply
    692,422.56x = 955,702.55 × 406,034.91
  4. Step 4: Simplify right side
    692,422.56x = 388,048,596,845.85
  5. Step 5: Solve for x
    x = 388,048,596,845.85/692,422.56
  6. Step 6: Final answer
    x = 560,421.65

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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.