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Finding the Fourth Proportional to 261,377.30, 391,908.11 and 117,256.74

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Solution

The fourth proportional to 261,377.30, 391,908.11 and 117,256.74 is: 175,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,377.30 : 391,908.11 = 117,256.74 : x
  2. Step 2: Convert to fraction form
    261,377.30/391,908.11 = 117,256.74/x
  3. Step 3: Cross multiply
    261,377.30x = 391,908.11 × 117,256.74
  4. Step 4: Simplify right side
    261,377.30x = 45,953,865,302.22
  5. Step 5: Solve for x
    x = 45,953,865,302.22/261,377.30
  6. Step 6: Final answer
    x = 175,814.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.