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Finding the Fourth Proportional to 61,929.76, 85,465.08 and 35,071.69

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Solution

The fourth proportional to 61,929.76, 85,465.08 and 35,071.69 is: 48,400.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,929.76 : 85,465.08 = 35,071.69 : x
  2. Step 2: Convert to fraction form
    61,929.76/85,465.08 = 35,071.69/x
  3. Step 3: Cross multiply
    61,929.76x = 85,465.08 × 35,071.69
  4. Step 4: Simplify right side
    61,929.76x = 2,997,404,791.59
  5. Step 5: Solve for x
    x = 2,997,404,791.59/61,929.76
  6. Step 6: Final answer
    x = 48,400.07

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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.