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Finding the Fourth Proportional to 170,681.64, 255,943.22 and 99,624.80

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Solution

The fourth proportional to 170,681.64, 255,943.22 and 99,624.80 is: 149,390.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,681.64 : 255,943.22 = 99,624.80 : x
  2. Step 2: Convert to fraction form
    170,681.64/255,943.22 = 99,624.80/x
  3. Step 3: Cross multiply
    170,681.64x = 255,943.22 × 99,624.80
  4. Step 4: Simplify right side
    170,681.64x = 25,498,290,326.02
  5. Step 5: Solve for x
    x = 25,498,290,326.02/170,681.64
  6. Step 6: Final answer
    x = 149,390.94

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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.