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Finding the Fourth Proportional to 70,998.73, 105,916.66 and 69,068.24

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Solution

The fourth proportional to 70,998.73, 105,916.66 and 69,068.24 is: 103,036.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,998.73 : 105,916.66 = 69,068.24 : x
  2. Step 2: Convert to fraction form
    70,998.73/105,916.66 = 69,068.24/x
  3. Step 3: Cross multiply
    70,998.73x = 105,916.66 × 69,068.24
  4. Step 4: Simplify right side
    70,998.73x = 7,315,477,972.10
  5. Step 5: Solve for x
    x = 7,315,477,972.10/70,998.73
  6. Step 6: Final answer
    x = 103,036.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.