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Finding the Fourth Proportional to 45,287.84, 67,925.16 and 12,009.92

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Solution

The fourth proportional to 45,287.84, 67,925.16 and 12,009.92 is: 18,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,287.84 : 67,925.16 = 12,009.92 : x
  2. Step 2: Convert to fraction form
    45,287.84/67,925.16 = 12,009.92/x
  3. Step 3: Cross multiply
    45,287.84x = 67,925.16 × 12,009.92
  4. Step 4: Simplify right side
    45,287.84x = 815,775,737.59
  5. Step 5: Solve for x
    x = 815,775,737.59/45,287.84
  6. Step 6: Final answer
    x = 18,013.13

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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.