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Finding the Fourth Proportional to 60,218.53, 90,328.55 and 28,631.56

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Solution

The fourth proportional to 60,218.53, 90,328.55 and 28,631.56 is: 42,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,218.53 : 90,328.55 = 28,631.56 : x
  2. Step 2: Convert to fraction form
    60,218.53/90,328.55 = 28,631.56/x
  3. Step 3: Cross multiply
    60,218.53x = 90,328.55 × 28,631.56
  4. Step 4: Simplify right side
    60,218.53x = 2,586,247,299.04
  5. Step 5: Solve for x
    x = 2,586,247,299.04/60,218.53
  6. Step 6: Final answer
    x = 42,947.70

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1.5x scale

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.