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Finding the Fourth Proportional to 283,510, 391,243.80 and 156,185.56

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Solution

The fourth proportional to 283,510, 391,243.80 and 156,185.56 is: 215,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,510 : 391,243.80 = 156,185.56 : x
  2. Step 2: Convert to fraction form
    283,510/391,243.80 = 156,185.56/x
  3. Step 3: Cross multiply
    283,510x = 391,243.80 × 156,185.56
  4. Step 4: Simplify right side
    283,510x = 61,106,631,999.53
  5. Step 5: Solve for x
    x = 61,106,631,999.53/283,510
  6. Step 6: Final answer
    x = 215,536.07

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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.