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Finding the Fourth Proportional to 48,903.40, 67,479.78 and 27,681.40

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Solution

The fourth proportional to 48,903.40, 67,479.78 and 27,681.40 is: 38,196.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,903.40 : 67,479.78 = 27,681.40 : x
  2. Step 2: Convert to fraction form
    48,903.40/67,479.78 = 27,681.40/x
  3. Step 3: Cross multiply
    48,903.40x = 67,479.78 × 27,681.40
  4. Step 4: Simplify right side
    48,903.40x = 1,867,934,782.09
  5. Step 5: Solve for x
    x = 1,867,934,782.09/48,903.40
  6. Step 6: Final answer
    x = 38,196.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.