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Finding the Fourth Proportional to 61,345.71, 92,018.52 and 19,792.71

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Solution

The fourth proportional to 61,345.71, 92,018.52 and 19,792.71 is: 29,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,345.71 : 92,018.52 = 19,792.71 : x
  2. Step 2: Convert to fraction form
    61,345.71/92,018.52 = 19,792.71/x
  3. Step 3: Cross multiply
    61,345.71x = 92,018.52 × 19,792.71
  4. Step 4: Simplify right side
    61,345.71x = 1,821,295,880.99
  5. Step 5: Solve for x
    x = 1,821,295,880.99/61,345.71
  6. Step 6: Final answer
    x = 29,689.05

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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.