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Finding the Fourth Proportional to 61,698.39, 92,547.56 and 20,145.39

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Solution

The fourth proportional to 61,698.39, 92,547.56 and 20,145.39 is: 30,218.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698.39 : 92,547.56 = 20,145.39 : x
  2. Step 2: Convert to fraction form
    61,698.39/92,547.56 = 20,145.39/x
  3. Step 3: Cross multiply
    61,698.39x = 92,547.56 × 20,145.39
  4. Step 4: Simplify right side
    61,698.39x = 1,864,406,589.02
  5. Step 5: Solve for x
    x = 1,864,406,589.02/61,698.39
  6. Step 6: Final answer
    x = 30,218.08

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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.