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Finding the Fourth Proportional to 40,889.60, 57,323.20 and 40,889.60

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Solution

The fourth proportional to 40,889.60, 57,323.20 and 40,889.60 is: 57,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,889.60 : 57,323.20 = 40,889.60 : x
  2. Step 2: Convert to fraction form
    40,889.60/57,323.20 = 40,889.60/x
  3. Step 3: Cross multiply
    40,889.60x = 57,323.20 × 40,889.60
  4. Step 4: Simplify right side
    40,889.60x = 2,343,922,718.72
  5. Step 5: Solve for x
    x = 2,343,922,718.72/40,889.60
  6. Step 6: Final answer
    x = 57,323.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.