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Finding the Fourth Proportional to 14,640.17, 20,203.54 and 7,925.81

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Solution

The fourth proportional to 14,640.17, 20,203.54 and 7,925.81 is: 10,937.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,640.17 : 20,203.54 = 7,925.81 : x
  2. Step 2: Convert to fraction form
    14,640.17/20,203.54 = 7,925.81/x
  3. Step 3: Cross multiply
    14,640.17x = 20,203.54 × 7,925.81
  4. Step 4: Simplify right side
    14,640.17x = 160,129,494.35
  5. Step 5: Solve for x
    x = 160,129,494.35/14,640.17
  6. Step 6: Final answer
    x = 10,937.68

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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.