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Finding the Fourth Proportional to 185,289.66, 255,700.65 and 100,406.88

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Solution

The fourth proportional to 185,289.66, 255,700.65 and 100,406.88 is: 138,561.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,289.66 : 255,700.65 = 100,406.88 : x
  2. Step 2: Convert to fraction form
    185,289.66/255,700.65 = 100,406.88/x
  3. Step 3: Cross multiply
    185,289.66x = 255,700.65 × 100,406.88
  4. Step 4: Simplify right side
    185,289.66x = 25,674,104,480.47
  5. Step 5: Solve for x
    x = 25,674,104,480.47/185,289.66
  6. Step 6: Final answer
    x = 138,561.99

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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.