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Finding the Fourth Proportional to 56,810.40, 85,221.84 and 15,260.64

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Solution

The fourth proportional to 56,810.40, 85,221.84 and 15,260.64 is: 22,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,810.40 : 85,221.84 = 15,260.64 : x
  2. Step 2: Convert to fraction form
    56,810.40/85,221.84 = 15,260.64/x
  3. Step 3: Cross multiply
    56,810.40x = 85,221.84 × 15,260.64
  4. Step 4: Simplify right side
    56,810.40x = 1,300,539,820.38
  5. Step 5: Solve for x
    x = 1,300,539,820.38/56,810.40
  6. Step 6: Final answer
    x = 22,892.64

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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.