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Finding the Fourth Proportional to 9,788.76, 13,505.13 and 5,539.32

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Solution

The fourth proportional to 9,788.76, 13,505.13 and 5,539.32 is: 7,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,788.76 : 13,505.13 = 5,539.32 : x
  2. Step 2: Convert to fraction form
    9,788.76/13,505.13 = 5,539.32/x
  3. Step 3: Cross multiply
    9,788.76x = 13,505.13 × 5,539.32
  4. Step 4: Simplify right side
    9,788.76x = 74,809,236.71
  5. Step 5: Solve for x
    x = 74,809,236.71/9,788.76
  6. Step 6: Final answer
    x = 7,642.36

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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.