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Finding the Fourth Proportional to 72,658.22, 109,019.66 and 37,100.75

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Solution

The fourth proportional to 72,658.22, 109,019.66 and 37,100.75 is: 55,667.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,658.22 : 109,019.66 = 37,100.75 : x
  2. Step 2: Convert to fraction form
    72,658.22/109,019.66 = 37,100.75/x
  3. Step 3: Cross multiply
    72,658.22x = 109,019.66 × 37,100.75
  4. Step 4: Simplify right side
    72,658.22x = 4,044,710,420.14
  5. Step 5: Solve for x
    x = 4,044,710,420.14/72,658.22
  6. Step 6: Final answer
    x = 55,667.63

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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.