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Finding the Fourth Proportional to 319,445.76, 440,858.88 and 185,329.92

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Solution

The fourth proportional to 319,445.76, 440,858.88 and 185,329.92 is: 255,769.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,445.76 : 440,858.88 = 185,329.92 : x
  2. Step 2: Convert to fraction form
    319,445.76/440,858.88 = 185,329.92/x
  3. Step 3: Cross multiply
    319,445.76x = 440,858.88 × 185,329.92
  4. Step 4: Simplify right side
    319,445.76x = 81,704,340,961.69
  5. Step 5: Solve for x
    x = 81,704,340,961.69/319,445.76
  6. Step 6: Final answer
    x = 255,769.06

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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.