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Finding the Fourth Proportional to 124,570.80, 186,856.20 and 89,578.80

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Solution

The fourth proportional to 124,570.80, 186,856.20 and 89,578.80 is: 134,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,570.80 : 186,856.20 = 89,578.80 : x
  2. Step 2: Convert to fraction form
    124,570.80/186,856.20 = 89,578.80/x
  3. Step 3: Cross multiply
    124,570.80x = 186,856.20 × 89,578.80
  4. Step 4: Simplify right side
    124,570.80x = 16,738,354,168.56
  5. Step 5: Solve for x
    x = 16,738,354,168.56/124,570.80
  6. Step 6: Final answer
    x = 134,368.20

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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.