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Finding the Fourth Proportional to 50,915.52, 70,264.20 and 28,254.96

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Solution

The fourth proportional to 50,915.52, 70,264.20 and 28,254.96 is: 38,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,915.52 : 70,264.20 = 28,254.96 : x
  2. Step 2: Convert to fraction form
    50,915.52/70,264.20 = 28,254.96/x
  3. Step 3: Cross multiply
    50,915.52x = 70,264.20 × 28,254.96
  4. Step 4: Simplify right side
    50,915.52x = 1,985,312,160.43
  5. Step 5: Solve for x
    x = 1,985,312,160.43/50,915.52
  6. Step 6: Final answer
    x = 38,992.28

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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.