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Finding the Fourth Proportional to 124,572.87, 186,748.20 and 45,668.70

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Solution

The fourth proportional to 124,572.87, 186,748.20 and 45,668.70 is: 68,462.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,572.87 : 186,748.20 = 45,668.70 : x
  2. Step 2: Convert to fraction form
    124,572.87/186,748.20 = 45,668.70/x
  3. Step 3: Cross multiply
    124,572.87x = 186,748.20 × 45,668.70
  4. Step 4: Simplify right side
    124,572.87x = 8,528,547,521.34
  5. Step 5: Solve for x
    x = 8,528,547,521.34/124,572.87
  6. Step 6: Final answer
    x = 68,462.32

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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.