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Finding the Fourth Proportional to 48,378.66, 72,572.57 and 18,798.77

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Solution

The fourth proportional to 48,378.66, 72,572.57 and 18,798.77 is: 28,199.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,378.66 : 72,572.57 = 18,798.77 : x
  2. Step 2: Convert to fraction form
    48,378.66/72,572.57 = 18,798.77/x
  3. Step 3: Cross multiply
    48,378.66x = 72,572.57 × 18,798.77
  4. Step 4: Simplify right side
    48,378.66x = 1,364,275,280.17
  5. Step 5: Solve for x
    x = 1,364,275,280.17/48,378.66
  6. Step 6: Final answer
    x = 28,199.94

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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.