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Finding the Fourth Proportional to 158,870.07, 238,189.71 and 74,586.87

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Solution

The fourth proportional to 158,870.07, 238,189.71 and 74,586.87 is: 111,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,870.07 : 238,189.71 = 74,586.87 : x
  2. Step 2: Convert to fraction form
    158,870.07/238,189.71 = 74,586.87/x
  3. Step 3: Cross multiply
    158,870.07x = 238,189.71 × 74,586.87
  4. Step 4: Simplify right side
    158,870.07x = 17,765,824,935.11
  5. Step 5: Solve for x
    x = 17,765,824,935.11/158,870.07
  6. Step 6: Final answer
    x = 111,826.13

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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.