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Finding the Fourth Proportional to 11,543.58, 15,928.77 and 7,069.95

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Solution

The fourth proportional to 11,543.58, 15,928.77 and 7,069.95 is: 9,755.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,543.58 : 15,928.77 = 7,069.95 : x
  2. Step 2: Convert to fraction form
    11,543.58/15,928.77 = 7,069.95/x
  3. Step 3: Cross multiply
    11,543.58x = 15,928.77 × 7,069.95
  4. Step 4: Simplify right side
    11,543.58x = 112,615,607.46
  5. Step 5: Solve for x
    x = 112,615,607.46/11,543.58
  6. Step 6: Final answer
    x = 9,755.69

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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.