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Finding the Fourth Proportional to 5,615.86, 7,750.60 and 4,670.02

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Solution

The fourth proportional to 5,615.86, 7,750.60 and 4,670.02 is: 6,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.86 : 7,750.60 = 4,670.02 : x
  2. Step 2: Convert to fraction form
    5,615.86/7,750.60 = 4,670.02/x
  3. Step 3: Cross multiply
    5,615.86x = 7,750.60 × 4,670.02
  4. Step 4: Simplify right side
    5,615.86x = 36,195,425.96
  5. Step 5: Solve for x
    x = 36,195,425.96/5,615.86
  6. Step 6: Final answer
    x = 6,445.22

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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.