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Finding the Fourth Proportional to 88,356.60, 121,929.32 and 48,069.33

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Solution

The fourth proportional to 88,356.60, 121,929.32 and 48,069.33 is: 66,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,356.60 : 121,929.32 = 48,069.33 : x
  2. Step 2: Convert to fraction form
    88,356.60/121,929.32 = 48,069.33/x
  3. Step 3: Cross multiply
    88,356.60x = 121,929.32 × 48,069.33
  4. Step 4: Simplify right side
    88,356.60x = 5,861,060,479.41
  5. Step 5: Solve for x
    x = 5,861,060,479.41/88,356.60
  6. Step 6: Final answer
    x = 66,334.16

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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.