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Finding the Fourth Proportional to 611,974.60, 917,961.73 and 191,250.47

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Solution

The fourth proportional to 611,974.60, 917,961.73 and 191,250.47 is: 286,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,974.60 : 917,961.73 = 191,250.47 : x
  2. Step 2: Convert to fraction form
    611,974.60/917,961.73 = 191,250.47/x
  3. Step 3: Cross multiply
    611,974.60x = 917,961.73 × 191,250.47
  4. Step 4: Simplify right side
    611,974.60x = 175,560,614,121.29
  5. Step 5: Solve for x
    x = 175,560,614,121.29/611,974.60
  6. Step 6: Final answer
    x = 286,875.66

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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.