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Finding the Fourth Proportional to 18,842.99, 26,011.80 and 13,807.42

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Solution

The fourth proportional to 18,842.99, 26,011.80 and 13,807.42 is: 19,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.99 : 26,011.80 = 13,807.42 : x
  2. Step 2: Convert to fraction form
    18,842.99/26,011.80 = 13,807.42/x
  3. Step 3: Cross multiply
    18,842.99x = 26,011.80 × 13,807.42
  4. Step 4: Simplify right side
    18,842.99x = 359,155,782.53
  5. Step 5: Solve for x
    x = 359,155,782.53/18,842.99
  6. Step 6: Final answer
    x = 19,060.45

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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.