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Finding the Fourth Proportional to 48,790, 67,330.20 and 26,434

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Solution

The fourth proportional to 48,790, 67,330.20 and 26,434 is: 36,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,790 : 67,330.20 = 26,434 : x
  2. Step 2: Convert to fraction form
    48,790/67,330.20 = 26,434/x
  3. Step 3: Cross multiply
    48,790x = 67,330.20 × 26,434
  4. Step 4: Simplify right side
    48,790x = 1,779,806,506.80
  5. Step 5: Solve for x
    x = 1,779,806,506.80/48,790
  6. Step 6: Final answer
    x = 36,478.92

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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.