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Finding the Fourth Proportional to 7,348.80, 11,010.40 and 4,750.40

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Solution

The fourth proportional to 7,348.80, 11,010.40 and 4,750.40 is: 7,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.80 : 11,010.40 = 4,750.40 : x
  2. Step 2: Convert to fraction form
    7,348.80/11,010.40 = 4,750.40/x
  3. Step 3: Cross multiply
    7,348.80x = 11,010.40 × 4,750.40
  4. Step 4: Simplify right side
    7,348.80x = 52,303,804.16
  5. Step 5: Solve for x
    x = 52,303,804.16/7,348.80
  6. Step 6: Final answer
    x = 7,117.33

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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.