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Finding the Fourth Proportional to 11,381.74, 15,719.88 and 7,598.32

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Solution

The fourth proportional to 11,381.74, 15,719.88 and 7,598.32 is: 10,494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.74 : 15,719.88 = 7,598.32 : x
  2. Step 2: Convert to fraction form
    11,381.74/15,719.88 = 7,598.32/x
  3. Step 3: Cross multiply
    11,381.74x = 15,719.88 × 7,598.32
  4. Step 4: Simplify right side
    11,381.74x = 119,444,678.60
  5. Step 5: Solve for x
    x = 119,444,678.60/11,381.74
  6. Step 6: Final answer
    x = 10,494.41

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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.