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Finding the Fourth Proportional to 216,909.39, 325,457.01 and 83,883.07

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Solution

The fourth proportional to 216,909.39, 325,457.01 and 83,883.07 is: 125,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,909.39 : 325,457.01 = 83,883.07 : x
  2. Step 2: Convert to fraction form
    216,909.39/325,457.01 = 83,883.07/x
  3. Step 3: Cross multiply
    216,909.39x = 325,457.01 × 83,883.07
  4. Step 4: Simplify right side
    216,909.39x = 27,300,332,338.18
  5. Step 5: Solve for x
    x = 27,300,332,338.18/216,909.39
  6. Step 6: Final answer
    x = 125,860.54

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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.