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Finding the Fourth Proportional to 76,688.10, 114,924.15 and 60,920.10

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Solution

The fourth proportional to 76,688.10, 114,924.15 and 60,920.10 is: 91,294.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,688.10 : 114,924.15 = 60,920.10 : x
  2. Step 2: Convert to fraction form
    76,688.10/114,924.15 = 60,920.10/x
  3. Step 3: Cross multiply
    76,688.10x = 114,924.15 × 60,920.10
  4. Step 4: Simplify right side
    76,688.10x = 7,001,190,710.42
  5. Step 5: Solve for x
    x = 7,001,190,710.42/76,688.10
  6. Step 6: Final answer
    x = 91,294.36

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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.