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Finding the Fourth Proportional to 108,547.71, 149,791.48 and 60,798.61

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Solution

The fourth proportional to 108,547.71, 149,791.48 and 60,798.61 is: 83,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,547.71 : 149,791.48 = 60,798.61 : x
  2. Step 2: Convert to fraction form
    108,547.71/149,791.48 = 60,798.61/x
  3. Step 3: Cross multiply
    108,547.71x = 149,791.48 × 60,798.61
  4. Step 4: Simplify right side
    108,547.71x = 9,107,113,773.84
  5. Step 5: Solve for x
    x = 9,107,113,773.84/108,547.71
  6. Step 6: Final answer
    x = 83,899.64

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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.