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Finding the Fourth Proportional to 203,501.79, 280,833.19 and 112,866.12

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Solution

The fourth proportional to 203,501.79, 280,833.19 and 112,866.12 is: 155,755.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,501.79 : 280,833.19 = 112,866.12 : x
  2. Step 2: Convert to fraction form
    203,501.79/280,833.19 = 112,866.12/x
  3. Step 3: Cross multiply
    203,501.79x = 280,833.19 × 112,866.12
  4. Step 4: Simplify right side
    203,501.79x = 31,696,552,240.36
  5. Step 5: Solve for x
    x = 31,696,552,240.36/203,501.79
  6. Step 6: Final answer
    x = 155,755.64

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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.