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Finding the Fourth Proportional to 35,062.73, 48,390.07 and 20,915.57

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Solution

The fourth proportional to 35,062.73, 48,390.07 and 20,915.57 is: 28,865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,062.73 : 48,390.07 = 20,915.57 : x
  2. Step 2: Convert to fraction form
    35,062.73/48,390.07 = 20,915.57/x
  3. Step 3: Cross multiply
    35,062.73x = 48,390.07 × 20,915.57
  4. Step 4: Simplify right side
    35,062.73x = 1,012,105,965.08
  5. Step 5: Solve for x
    x = 1,012,105,965.08/35,062.73
  6. Step 6: Final answer
    x = 28,865.58

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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.