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Finding the Fourth Proportional to 111,567.38, 153,962.98 and 61,266.38

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Solution

The fourth proportional to 111,567.38, 153,962.98 and 61,266.38 is: 84,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,567.38 : 153,962.98 = 61,266.38 : x
  2. Step 2: Convert to fraction form
    111,567.38/153,962.98 = 61,266.38/x
  3. Step 3: Cross multiply
    111,567.38x = 153,962.98 × 61,266.38
  4. Step 4: Simplify right side
    111,567.38x = 9,432,753,515.63
  5. Step 5: Solve for x
    x = 9,432,753,515.63/111,567.38
  6. Step 6: Final answer
    x = 84,547.60

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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.