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Finding the Fourth Proportional to 76,352.78, 105,367.68 and 42,362.07

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Solution

The fourth proportional to 76,352.78, 105,367.68 and 42,362.07 is: 58,460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,352.78 : 105,367.68 = 42,362.07 : x
  2. Step 2: Convert to fraction form
    76,352.78/105,367.68 = 42,362.07/x
  3. Step 3: Cross multiply
    76,352.78x = 105,367.68 × 42,362.07
  4. Step 4: Simplify right side
    76,352.78x = 4,463,593,035.90
  5. Step 5: Solve for x
    x = 4,463,593,035.90/76,352.78
  6. Step 6: Final answer
    x = 58,460.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.