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Finding the Fourth Proportional to 28,365.95, 42,548.92 and 28,324.95

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Solution

The fourth proportional to 28,365.95, 42,548.92 and 28,324.95 is: 42,487.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.95 : 42,548.92 = 28,324.95 : x
  2. Step 2: Convert to fraction form
    28,365.95/42,548.92 = 28,324.95/x
  3. Step 3: Cross multiply
    28,365.95x = 42,548.92 × 28,324.95
  4. Step 4: Simplify right side
    28,365.95x = 1,205,195,960.74
  5. Step 5: Solve for x
    x = 1,205,195,960.74/28,365.95
  6. Step 6: Final answer
    x = 42,487.43

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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.