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Finding the Fourth Proportional to 68,980.40, 103,448.72 and 29,526.92

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Solution

The fourth proportional to 68,980.40, 103,448.72 and 29,526.92 is: 44,281.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.40 : 103,448.72 = 29,526.92 : x
  2. Step 2: Convert to fraction form
    68,980.40/103,448.72 = 29,526.92/x
  3. Step 3: Cross multiply
    68,980.40x = 103,448.72 × 29,526.92
  4. Step 4: Simplify right side
    68,980.40x = 3,054,521,636.12
  5. Step 5: Solve for x
    x = 3,054,521,636.12/68,980.40
  6. Step 6: Final answer
    x = 44,281.01

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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.