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Finding the Fourth Proportional to 72,603.90, 108,284.80 and 63,777.06

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Solution

The fourth proportional to 72,603.90, 108,284.80 and 63,777.06 is: 95,120.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603.90 : 108,284.80 = 63,777.06 : x
  2. Step 2: Convert to fraction form
    72,603.90/108,284.80 = 63,777.06/x
  3. Step 3: Cross multiply
    72,603.90x = 108,284.80 × 63,777.06
  4. Step 4: Simplify right side
    72,603.90x = 6,906,086,186.69
  5. Step 5: Solve for x
    x = 6,906,086,186.69/72,603.90
  6. Step 6: Final answer
    x = 95,120.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.