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Finding the Fourth Proportional to 319,447.76, 440,859.76 and 185,311.76

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Solution

The fourth proportional to 319,447.76, 440,859.76 and 185,311.76 is: 255,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,447.76 : 440,859.76 = 185,311.76 : x
  2. Step 2: Convert to fraction form
    319,447.76/440,859.76 = 185,311.76/x
  3. Step 3: Cross multiply
    319,447.76x = 440,859.76 × 185,311.76
  4. Step 4: Simplify right side
    319,447.76x = 81,696,498,038.78
  5. Step 5: Solve for x
    x = 81,696,498,038.78/319,447.76
  6. Step 6: Final answer
    x = 255,742.90

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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.