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Finding the Fourth Proportional to 18,924.69, 26,116.08 and 10,971.52

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Solution

The fourth proportional to 18,924.69, 26,116.08 and 10,971.52 is: 15,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.69 : 26,116.08 = 10,971.52 : x
  2. Step 2: Convert to fraction form
    18,924.69/26,116.08 = 10,971.52/x
  3. Step 3: Cross multiply
    18,924.69x = 26,116.08 × 10,971.52
  4. Step 4: Simplify right side
    18,924.69x = 286,533,094.04
  5. Step 5: Solve for x
    x = 286,533,094.04/18,924.69
  6. Step 6: Final answer
    x = 15,140.70

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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.