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Finding the Fourth Proportional to 67,036.40, 100,547.40 and 17,788.40

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Solution

The fourth proportional to 67,036.40, 100,547.40 and 17,788.40 is: 26,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,036.40 : 100,547.40 = 17,788.40 : x
  2. Step 2: Convert to fraction form
    67,036.40/100,547.40 = 17,788.40/x
  3. Step 3: Cross multiply
    67,036.40x = 100,547.40 × 17,788.40
  4. Step 4: Simplify right side
    67,036.40x = 1,788,577,370.16
  5. Step 5: Solve for x
    x = 1,788,577,370.16/67,036.40
  6. Step 6: Final answer
    x = 26,680.69

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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.