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Finding the Fourth Proportional to 52,798.88, 78,979.44 and 40,223.76

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Solution

The fourth proportional to 52,798.88, 78,979.44 and 40,223.76 is: 60,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,798.88 : 78,979.44 = 40,223.76 : x
  2. Step 2: Convert to fraction form
    52,798.88/78,979.44 = 40,223.76/x
  3. Step 3: Cross multiply
    52,798.88x = 78,979.44 × 40,223.76
  4. Step 4: Simplify right side
    52,798.88x = 3,176,850,039.49
  5. Step 5: Solve for x
    x = 3,176,850,039.49/52,798.88
  6. Step 6: Final answer
    x = 60,168.89

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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.