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Finding the Fourth Proportional to 72,895.95, 109,306.13 and 33,419.07

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Solution

The fourth proportional to 72,895.95, 109,306.13 and 33,419.07 is: 50,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,895.95 : 109,306.13 = 33,419.07 : x
  2. Step 2: Convert to fraction form
    72,895.95/109,306.13 = 33,419.07/x
  3. Step 3: Cross multiply
    72,895.95x = 109,306.13 × 33,419.07
  4. Step 4: Simplify right side
    72,895.95x = 3,652,909,042.80
  5. Step 5: Solve for x
    x = 3,652,909,042.80/72,895.95
  6. Step 6: Final answer
    x = 50,111.28

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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.