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Finding the Fourth Proportional to 163,928.80, 245,893.20 and 148,376.80

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Solution

The fourth proportional to 163,928.80, 245,893.20 and 148,376.80 is: 222,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,928.80 : 245,893.20 = 148,376.80 : x
  2. Step 2: Convert to fraction form
    163,928.80/245,893.20 = 148,376.80/x
  3. Step 3: Cross multiply
    163,928.80x = 245,893.20 × 148,376.80
  4. Step 4: Simplify right side
    163,928.80x = 36,484,846,157.76
  5. Step 5: Solve for x
    x = 36,484,846,157.76/163,928.80
  6. Step 6: Final answer
    x = 222,565.20

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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.