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Finding the Fourth Proportional to 25,957.76, 38,941.48 and 12,106.76

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Solution

The fourth proportional to 25,957.76, 38,941.48 and 12,106.76 is: 18,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,957.76 : 38,941.48 = 12,106.76 : x
  2. Step 2: Convert to fraction form
    25,957.76/38,941.48 = 12,106.76/x
  3. Step 3: Cross multiply
    25,957.76x = 38,941.48 × 12,106.76
  4. Step 4: Simplify right side
    25,957.76x = 471,455,152.40
  5. Step 5: Solve for x
    x = 471,455,152.40/25,957.76
  6. Step 6: Final answer
    x = 18,162.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.