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Finding the Fourth Proportional to 34,872.84, 48,123.86 and 18,957.15

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Solution

The fourth proportional to 34,872.84, 48,123.86 and 18,957.15 is: 26,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,872.84 : 48,123.86 = 18,957.15 : x
  2. Step 2: Convert to fraction form
    34,872.84/48,123.86 = 18,957.15/x
  3. Step 3: Cross multiply
    34,872.84x = 48,123.86 × 18,957.15
  4. Step 4: Simplify right side
    34,872.84x = 912,291,137.81
  5. Step 5: Solve for x
    x = 912,291,137.81/34,872.84
  6. Step 6: Final answer
    x = 26,160.51

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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.