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Finding the Fourth Proportional to 311,348.96, 429,637.20 and 175,376.96

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Solution

The fourth proportional to 311,348.96, 429,637.20 and 175,376.96 is: 242,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,348.96 : 429,637.20 = 175,376.96 : x
  2. Step 2: Convert to fraction form
    311,348.96/429,637.20 = 175,376.96/x
  3. Step 3: Cross multiply
    311,348.96x = 429,637.20 × 175,376.96
  4. Step 4: Simplify right side
    311,348.96x = 75,348,466,038.91
  5. Step 5: Solve for x
    x = 75,348,466,038.91/311,348.96
  6. Step 6: Final answer
    x = 242,006.48

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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.