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Finding the Fourth Proportional to 60,378.81, 90,605.07 and 38,161.59

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Solution

The fourth proportional to 60,378.81, 90,605.07 and 38,161.59 is: 57,265.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,378.81 : 90,605.07 = 38,161.59 : x
  2. Step 2: Convert to fraction form
    60,378.81/90,605.07 = 38,161.59/x
  3. Step 3: Cross multiply
    60,378.81x = 90,605.07 × 38,161.59
  4. Step 4: Simplify right side
    60,378.81x = 3,457,633,533.26
  5. Step 5: Solve for x
    x = 3,457,633,533.26/60,378.81
  6. Step 6: Final answer
    x = 57,265.68

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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.