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Finding the Fourth Proportional to 67,332, 101,041.20 and 30,396

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Solution

The fourth proportional to 67,332, 101,041.20 and 30,396 is: 45,613.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,332 : 101,041.20 = 30,396 : x
  2. Step 2: Convert to fraction form
    67,332/101,041.20 = 30,396/x
  3. Step 3: Cross multiply
    67,332x = 101,041.20 × 30,396
  4. Step 4: Simplify right side
    67,332x = 3,071,248,315.20
  5. Step 5: Solve for x
    x = 3,071,248,315.20/67,332
  6. Step 6: Final answer
    x = 45,613.50

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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.