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Finding the Fourth Proportional to 185,859.99, 256,499.49 and 105,288.18

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Solution

The fourth proportional to 185,859.99, 256,499.49 and 105,288.18 is: 145,304.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,859.99 : 256,499.49 = 105,288.18 : x
  2. Step 2: Convert to fraction form
    185,859.99/256,499.49 = 105,288.18/x
  3. Step 3: Cross multiply
    185,859.99x = 256,499.49 × 105,288.18
  4. Step 4: Simplify right side
    185,859.99x = 27,006,364,473.03
  5. Step 5: Solve for x
    x = 27,006,364,473.03/185,859.99
  6. Step 6: Final answer
    x = 145,304.88

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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.