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Finding the Fourth Proportional to 61,916.40, 85,443.05 and 35,065.51

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Solution

The fourth proportional to 61,916.40, 85,443.05 and 35,065.51 is: 48,389.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,916.40 : 85,443.05 = 35,065.51 : x
  2. Step 2: Convert to fraction form
    61,916.40/85,443.05 = 35,065.51/x
  3. Step 3: Cross multiply
    61,916.40x = 85,443.05 × 35,065.51
  4. Step 4: Simplify right side
    61,916.40x = 2,996,103,998.26
  5. Step 5: Solve for x
    x = 2,996,103,998.26/61,916.40
  6. Step 6: Final answer
    x = 48,389.51

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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.