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Finding the Fourth Proportional to 38,898.10, 54,340.70 and 38,898.10

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Solution

The fourth proportional to 38,898.10, 54,340.70 and 38,898.10 is: 54,340.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,898.10 : 54,340.70 = 38,898.10 : x
  2. Step 2: Convert to fraction form
    38,898.10/54,340.70 = 38,898.10/x
  3. Step 3: Cross multiply
    38,898.10x = 54,340.70 × 38,898.10
  4. Step 4: Simplify right side
    38,898.10x = 2,113,749,982.67
  5. Step 5: Solve for x
    x = 2,113,749,982.67/38,898.10
  6. Step 6: Final answer
    x = 54,340.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.