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Finding the Fourth Proportional to 423,531.98, 635,392.74 and 143,041.94

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Solution

The fourth proportional to 423,531.98, 635,392.74 and 143,041.94 is: 214,594.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,531.98 : 635,392.74 = 143,041.94 : x
  2. Step 2: Convert to fraction form
    423,531.98/635,392.74 = 143,041.94/x
  3. Step 3: Cross multiply
    423,531.98x = 635,392.74 × 143,041.94
  4. Step 4: Simplify right side
    423,531.98x = 90,887,810,191.52
  5. Step 5: Solve for x
    x = 90,887,810,191.52/423,531.98
  6. Step 6: Final answer
    x = 214,594.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.