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Finding the Fourth Proportional to 289,909.76, 400,119.20 and 176,798.12

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Solution

The fourth proportional to 289,909.76, 400,119.20 and 176,798.12 is: 244,008.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,909.76 : 400,119.20 = 176,798.12 : x
  2. Step 2: Convert to fraction form
    289,909.76/400,119.20 = 176,798.12/x
  3. Step 3: Cross multiply
    289,909.76x = 400,119.20 × 176,798.12
  4. Step 4: Simplify right side
    289,909.76x = 70,740,322,335.90
  5. Step 5: Solve for x
    x = 70,740,322,335.90/289,909.76
  6. Step 6: Final answer
    x = 244,008.07

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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.