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Finding the Fourth Proportional to 40,364.24, 60,543.90 and 19,319.24

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Solution

The fourth proportional to 40,364.24, 60,543.90 and 19,319.24 is: 28,977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,364.24 : 60,543.90 = 19,319.24 : x
  2. Step 2: Convert to fraction form
    40,364.24/60,543.90 = 19,319.24/x
  3. Step 3: Cross multiply
    40,364.24x = 60,543.90 × 19,319.24
  4. Step 4: Simplify right side
    40,364.24x = 1,169,662,134.64
  5. Step 5: Solve for x
    x = 1,169,662,134.64/40,364.24
  6. Step 6: Final answer
    x = 28,977.68

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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.