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Finding the Fourth Proportional to 60,578.70, 90,831.60 and 31,054.20

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Solution

The fourth proportional to 60,578.70, 90,831.60 and 31,054.20 is: 46,562.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,578.70 : 90,831.60 = 31,054.20 : x
  2. Step 2: Convert to fraction form
    60,578.70/90,831.60 = 31,054.20/x
  3. Step 3: Cross multiply
    60,578.70x = 90,831.60 × 31,054.20
  4. Step 4: Simplify right side
    60,578.70x = 2,820,702,672.72
  5. Step 5: Solve for x
    x = 2,820,702,672.72/60,578.70
  6. Step 6: Final answer
    x = 46,562.61

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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.