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Finding the Fourth Proportional to 371,116.17, 512,263.71 and 263,996.91

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Solution

The fourth proportional to 371,116.17, 512,263.71 and 263,996.91 is: 364,403.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,116.17 : 512,263.71 = 263,996.91 : x
  2. Step 2: Convert to fraction form
    371,116.17/512,263.71 = 263,996.91/x
  3. Step 3: Cross multiply
    371,116.17x = 512,263.71 × 263,996.91
  4. Step 4: Simplify right side
    371,116.17x = 135,236,036,545.14
  5. Step 5: Solve for x
    x = 135,236,036,545.14/371,116.17
  6. Step 6: Final answer
    x = 364,403.51

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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.