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Finding the Fourth Proportional to 94,647.69, 141,875.69 and 61,388.87

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Solution

The fourth proportional to 94,647.69, 141,875.69 and 61,388.87 is: 92,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,647.69 : 141,875.69 = 61,388.87 : x
  2. Step 2: Convert to fraction form
    94,647.69/141,875.69 = 61,388.87/x
  3. Step 3: Cross multiply
    94,647.69x = 141,875.69 × 61,388.87
  4. Step 4: Simplify right side
    94,647.69x = 8,709,587,273.25
  5. Step 5: Solve for x
    x = 8,709,587,273.25/94,647.69
  6. Step 6: Final answer
    x = 92,021.13

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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.