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Finding the Fourth Proportional to 158,174.95, 218,281.39 and 86,554.95

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Solution

The fourth proportional to 158,174.95, 218,281.39 and 86,554.95 is: 119,445.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,174.95 : 218,281.39 = 86,554.95 : x
  2. Step 2: Convert to fraction form
    158,174.95/218,281.39 = 86,554.95/x
  3. Step 3: Cross multiply
    158,174.95x = 218,281.39 × 86,554.95
  4. Step 4: Simplify right side
    158,174.95x = 18,893,334,797.38
  5. Step 5: Solve for x
    x = 18,893,334,797.38/158,174.95
  6. Step 6: Final answer
    x = 119,445.81

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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.