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Finding the Fourth Proportional to 61,880.72, 85,388.29 and 34,653.00

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Solution

The fourth proportional to 61,880.72, 85,388.29 and 34,653.00 is: 47,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,880.72 : 85,388.29 = 34,653.00 : x
  2. Step 2: Convert to fraction form
    61,880.72/85,388.29 = 34,653.00/x
  3. Step 3: Cross multiply
    61,880.72x = 85,388.29 × 34,653.00
  4. Step 4: Simplify right side
    61,880.72x = 2,958,960,646.94
  5. Step 5: Solve for x
    x = 2,958,960,646.94/61,880.72
  6. Step 6: Final answer
    x = 47,817.17

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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.