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Finding the Fourth Proportional to 72,365.70, 108,548.55 and 25,623.30

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Solution

The fourth proportional to 72,365.70, 108,548.55 and 25,623.30 is: 38,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,365.70 : 108,548.55 = 25,623.30 : x
  2. Step 2: Convert to fraction form
    72,365.70/108,548.55 = 25,623.30/x
  3. Step 3: Cross multiply
    72,365.70x = 108,548.55 × 25,623.30
  4. Step 4: Simplify right side
    72,365.70x = 2,781,372,061.22
  5. Step 5: Solve for x
    x = 2,781,372,061.22/72,365.70
  6. Step 6: Final answer
    x = 38,434.95

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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.