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Finding the Fourth Proportional to 18,737.89, 25,859.93 and 10,356.01

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Solution

The fourth proportional to 18,737.89, 25,859.93 and 10,356.01 is: 14,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.89 : 25,859.93 = 10,356.01 : x
  2. Step 2: Convert to fraction form
    18,737.89/25,859.93 = 10,356.01/x
  3. Step 3: Cross multiply
    18,737.89x = 25,859.93 × 10,356.01
  4. Step 4: Simplify right side
    18,737.89x = 267,805,641.90
  5. Step 5: Solve for x
    x = 267,805,641.90/18,737.89
  6. Step 6: Final answer
    x = 14,292.20

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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.