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Finding the Fourth Proportional to 94,620.87, 142,029.74 and 69,689.07

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Solution

The fourth proportional to 94,620.87, 142,029.74 and 69,689.07 is: 104,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,620.87 : 142,029.74 = 69,689.07 : x
  2. Step 2: Convert to fraction form
    94,620.87/142,029.74 = 69,689.07/x
  3. Step 3: Cross multiply
    94,620.87x = 142,029.74 × 69,689.07
  4. Step 4: Simplify right side
    94,620.87x = 9,897,920,492.94
  5. Step 5: Solve for x
    x = 9,897,920,492.94/94,620.87
  6. Step 6: Final answer
    x = 104,606.10

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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.