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Finding the Fourth Proportional to 635,453.19, 876,706.11 and 406,144.71

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Solution

The fourth proportional to 635,453.19, 876,706.11 and 406,144.71 is: 560,339.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,453.19 : 876,706.11 = 406,144.71 : x
  2. Step 2: Convert to fraction form
    635,453.19/876,706.11 = 406,144.71/x
  3. Step 3: Cross multiply
    635,453.19x = 876,706.11 × 406,144.71
  4. Step 4: Simplify right side
    635,453.19x = 356,069,548,801.18
  5. Step 5: Solve for x
    x = 356,069,548,801.18/635,453.19
  6. Step 6: Final answer
    x = 560,339.54

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Double scale
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1.5x scale

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.