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Finding the Fourth Proportional to 118,374.25, 163,355.50 and 64,659.28

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Solution

The fourth proportional to 118,374.25, 163,355.50 and 64,659.28 is: 89,229.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,374.25 : 163,355.50 = 64,659.28 : x
  2. Step 2: Convert to fraction form
    118,374.25/163,355.50 = 64,659.28/x
  3. Step 3: Cross multiply
    118,374.25x = 163,355.50 × 64,659.28
  4. Step 4: Simplify right side
    118,374.25x = 10,562,449,014.04
  5. Step 5: Solve for x
    x = 10,562,449,014.04/118,374.25
  6. Step 6: Final answer
    x = 89,229.28

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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.