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Finding the Fourth Proportional to 60,391.51, 90,593.58 and 20,415.19

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Solution

The fourth proportional to 60,391.51, 90,593.58 and 20,415.19 is: 30,624.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,391.51 : 90,593.58 = 20,415.19 : x
  2. Step 2: Convert to fraction form
    60,391.51/90,593.58 = 20,415.19/x
  3. Step 3: Cross multiply
    60,391.51x = 90,593.58 × 20,415.19
  4. Step 4: Simplify right side
    60,391.51x = 1,849,485,148.48
  5. Step 5: Solve for x
    x = 1,849,485,148.48/60,391.51
  6. Step 6: Final answer
    x = 30,624.92

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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.