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Finding the Fourth Proportional to 57,260, 79,018.80 and 32,109.60

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Solution

The fourth proportional to 57,260, 79,018.80 and 32,109.60 is: 44,311.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,260 : 79,018.80 = 32,109.60 : x
  2. Step 2: Convert to fraction form
    57,260/79,018.80 = 32,109.60/x
  3. Step 3: Cross multiply
    57,260x = 79,018.80 × 32,109.60
  4. Step 4: Simplify right side
    57,260x = 2,537,262,060.48
  5. Step 5: Solve for x
    x = 2,537,262,060.48/57,260
  6. Step 6: Final answer
    x = 44,311.25

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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.