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Finding the Fourth Proportional to 282,012.76, 389,173.98 and 161,152.66

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Solution

The fourth proportional to 282,012.76, 389,173.98 and 161,152.66 is: 222,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,012.76 : 389,173.98 = 161,152.66 : x
  2. Step 2: Convert to fraction form
    282,012.76/389,173.98 = 161,152.66/x
  3. Step 3: Cross multiply
    282,012.76x = 389,173.98 × 161,152.66
  4. Step 4: Simplify right side
    282,012.76x = 62,716,422,079.79
  5. Step 5: Solve for x
    x = 62,716,422,079.79/282,012.76
  6. Step 6: Final answer
    x = 222,388.60

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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.