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Finding the Fourth Proportional to 60,561.63, 90,845.64 and 18,438.51

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Solution

The fourth proportional to 60,561.63, 90,845.64 and 18,438.51 is: 27,658.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,561.63 : 90,845.64 = 18,438.51 : x
  2. Step 2: Convert to fraction form
    60,561.63/90,845.64 = 18,438.51/x
  3. Step 3: Cross multiply
    60,561.63x = 90,845.64 × 18,438.51
  4. Step 4: Simplify right side
    60,561.63x = 1,675,058,241.60
  5. Step 5: Solve for x
    x = 1,675,058,241.60/60,561.63
  6. Step 6: Final answer
    x = 27,658.74

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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.