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Finding the Fourth Proportional to 8,874.60, 13,331.70 and 7,416.60

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Solution

The fourth proportional to 8,874.60, 13,331.70 and 7,416.60 is: 11,141.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,874.60 : 13,331.70 = 7,416.60 : x
  2. Step 2: Convert to fraction form
    8,874.60/13,331.70 = 7,416.60/x
  3. Step 3: Cross multiply
    8,874.60x = 13,331.70 × 7,416.60
  4. Step 4: Simplify right side
    8,874.60x = 98,875,886.22
  5. Step 5: Solve for x
    x = 98,875,886.22/8,874.60
  6. Step 6: Final answer
    x = 11,141.45

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1.5x scale

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.