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Finding the Fourth Proportional to 53,199.70, 79,731.66 and 28,251.70

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Solution

The fourth proportional to 53,199.70, 79,731.66 and 28,251.70 is: 42,341.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,199.70 : 79,731.66 = 28,251.70 : x
  2. Step 2: Convert to fraction form
    53,199.70/79,731.66 = 28,251.70/x
  3. Step 3: Cross multiply
    53,199.70x = 79,731.66 × 28,251.70
  4. Step 4: Simplify right side
    53,199.70x = 2,252,554,938.82
  5. Step 5: Solve for x
    x = 2,252,554,938.82/53,199.70
  6. Step 6: Final answer
    x = 42,341.50

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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.