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Finding the Fourth Proportional to 78,383.99, 108,200.93 and 54,524.51

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Solution

The fourth proportional to 78,383.99, 108,200.93 and 54,524.51 is: 75,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,383.99 : 108,200.93 = 54,524.51 : x
  2. Step 2: Convert to fraction form
    78,383.99/108,200.93 = 54,524.51/x
  3. Step 3: Cross multiply
    78,383.99x = 108,200.93 × 54,524.51
  4. Step 4: Simplify right side
    78,383.99x = 5,899,602,689.79
  5. Step 5: Solve for x
    x = 5,899,602,689.79/78,383.99
  6. Step 6: Final answer
    x = 75,265.40

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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.