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Finding the Fourth Proportional to 68,980.84, 103,558.80 and 58,658.20

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Solution

The fourth proportional to 68,980.84, 103,558.80 and 58,658.20 is: 88,061.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,980.84 : 103,558.80 = 58,658.20 : x
  2. Step 2: Convert to fraction form
    68,980.84/103,558.80 = 58,658.20/x
  3. Step 3: Cross multiply
    68,980.84x = 103,558.80 × 58,658.20
  4. Step 4: Simplify right side
    68,980.84x = 6,074,572,802.16
  5. Step 5: Solve for x
    x = 6,074,572,802.16/68,980.84
  6. Step 6: Final answer
    x = 88,061.74

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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.