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Finding the Fourth Proportional to 328,311.70, 453,077.12 and 185,071.71

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Solution

The fourth proportional to 328,311.70, 453,077.12 and 185,071.71 is: 255,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,311.70 : 453,077.12 = 185,071.71 : x
  2. Step 2: Convert to fraction form
    328,311.70/453,077.12 = 185,071.71/x
  3. Step 3: Cross multiply
    328,311.70x = 453,077.12 × 185,071.71
  4. Step 4: Simplify right side
    328,311.70x = 83,851,757,360.28
  5. Step 5: Solve for x
    x = 83,851,757,360.28/328,311.70
  6. Step 6: Final answer
    x = 255,402.89

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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.