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Finding the Fourth Proportional to 18,762.48, 25,868.70 and 12,036.24

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Solution

The fourth proportional to 18,762.48, 25,868.70 and 12,036.24 is: 16,594.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.48 : 25,868.70 = 12,036.24 : x
  2. Step 2: Convert to fraction form
    18,762.48/25,868.70 = 12,036.24/x
  3. Step 3: Cross multiply
    18,762.48x = 25,868.70 × 12,036.24
  4. Step 4: Simplify right side
    18,762.48x = 311,361,881.69
  5. Step 5: Solve for x
    x = 311,361,881.69/18,762.48
  6. Step 6: Final answer
    x = 16,594.92

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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.