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Finding the Fourth Proportional to 216,686.04, 324,944.82 and 74,504.31

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Solution

The fourth proportional to 216,686.04, 324,944.82 and 74,504.31 is: 111,727.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,686.04 : 324,944.82 = 74,504.31 : x
  2. Step 2: Convert to fraction form
    216,686.04/324,944.82 = 74,504.31/x
  3. Step 3: Cross multiply
    216,686.04x = 324,944.82 × 74,504.31
  4. Step 4: Simplify right side
    216,686.04x = 24,209,789,602.17
  5. Step 5: Solve for x
    x = 24,209,789,602.17/216,686.04
  6. Step 6: Final answer
    x = 111,727.50

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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.