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Finding the Fourth Proportional to 14,203.18, 19,601.25 and 7,915.54

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Solution

The fourth proportional to 14,203.18, 19,601.25 and 7,915.54 is: 10,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.18 : 19,601.25 = 7,915.54 : x
  2. Step 2: Convert to fraction form
    14,203.18/19,601.25 = 7,915.54/x
  3. Step 3: Cross multiply
    14,203.18x = 19,601.25 × 7,915.54
  4. Step 4: Simplify right side
    14,203.18x = 155,154,478.43
  5. Step 5: Solve for x
    x = 155,154,478.43/14,203.18
  6. Step 6: Final answer
    x = 10,923.93

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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.