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Finding the Fourth Proportional to 138,707.80, 208,061.76 and 33,526.76

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Solution

The fourth proportional to 138,707.80, 208,061.76 and 33,526.76 is: 50,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,707.80 : 208,061.76 = 33,526.76 : x
  2. Step 2: Convert to fraction form
    138,707.80/208,061.76 = 33,526.76/x
  3. Step 3: Cross multiply
    138,707.80x = 208,061.76 × 33,526.76
  4. Step 4: Simplify right side
    138,707.80x = 6,975,636,692.70
  5. Step 5: Solve for x
    x = 6,975,636,692.70/138,707.80
  6. Step 6: Final answer
    x = 50,290.15

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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.