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Finding the Fourth Proportional to 11,575.53, 15,981.09 and 7,603.59

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Solution

The fourth proportional to 11,575.53, 15,981.09 and 7,603.59 is: 10,497.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,575.53 : 15,981.09 = 7,603.59 : x
  2. Step 2: Convert to fraction form
    11,575.53/15,981.09 = 7,603.59/x
  3. Step 3: Cross multiply
    11,575.53x = 15,981.09 × 7,603.59
  4. Step 4: Simplify right side
    11,575.53x = 121,513,656.11
  5. Step 5: Solve for x
    x = 121,513,656.11/11,575.53
  6. Step 6: Final answer
    x = 10,497.46

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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.