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Finding the Fourth Proportional to 61,509.79, 92,265.59 and 19,389.07

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Solution

The fourth proportional to 61,509.79, 92,265.59 and 19,389.07 is: 29,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,509.79 : 92,265.59 = 19,389.07 : x
  2. Step 2: Convert to fraction form
    61,509.79/92,265.59 = 19,389.07/x
  3. Step 3: Cross multiply
    61,509.79x = 92,265.59 × 19,389.07
  4. Step 4: Simplify right side
    61,509.79x = 1,788,943,983.10
  5. Step 5: Solve for x
    x = 1,788,943,983.10/61,509.79
  6. Step 6: Final answer
    x = 29,083.89

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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.