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Finding the Fourth Proportional to 7,214.54, 9,955.85 and 4,070.66

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Solution

The fourth proportional to 7,214.54, 9,955.85 and 4,070.66 is: 5,617.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,214.54 : 9,955.85 = 4,070.66 : x
  2. Step 2: Convert to fraction form
    7,214.54/9,955.85 = 4,070.66/x
  3. Step 3: Cross multiply
    7,214.54x = 9,955.85 × 4,070.66
  4. Step 4: Simplify right side
    7,214.54x = 40,526,810.23
  5. Step 5: Solve for x
    x = 40,526,810.23/7,214.54
  6. Step 6: Final answer
    x = 5,617.38

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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.