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Finding the Fourth Proportional to 64,570.44, 89,148.96 and 57,844.20

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Solution

The fourth proportional to 64,570.44, 89,148.96 and 57,844.20 is: 79,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,570.44 : 89,148.96 = 57,844.20 : x
  2. Step 2: Convert to fraction form
    64,570.44/89,148.96 = 57,844.20/x
  3. Step 3: Cross multiply
    64,570.44x = 89,148.96 × 57,844.20
  4. Step 4: Simplify right side
    64,570.44x = 5,156,750,272.03
  5. Step 5: Solve for x
    x = 5,156,750,272.03/64,570.44
  6. Step 6: Final answer
    x = 79,862.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.