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Finding the Fourth Proportional to 22,111.60, 33,158.60 and 7,316.40

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Solution

The fourth proportional to 22,111.60, 33,158.60 and 7,316.40 is: 10,971.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,111.60 : 33,158.60 = 7,316.40 : x
  2. Step 2: Convert to fraction form
    22,111.60/33,158.60 = 7,316.40/x
  3. Step 3: Cross multiply
    22,111.60x = 33,158.60 × 7,316.40
  4. Step 4: Simplify right side
    22,111.60x = 242,601,581.04
  5. Step 5: Solve for x
    x = 242,601,581.04/22,111.60
  6. Step 6: Final answer
    x = 10,971.69

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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.