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Finding the Fourth Proportional to 124,245, 186,396.66 and 41,139

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Solution

The fourth proportional to 124,245, 186,396.66 and 41,139 is: 61,718.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,245 : 186,396.66 = 41,139 : x
  2. Step 2: Convert to fraction form
    124,245/186,396.66 = 41,139/x
  3. Step 3: Cross multiply
    124,245x = 186,396.66 × 41,139
  4. Step 4: Simplify right side
    124,245x = 7,668,172,195.74
  5. Step 5: Solve for x
    x = 7,668,172,195.74/124,245
  6. Step 6: Final answer
    x = 61,718.16

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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.