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Finding the Fourth Proportional to 192,813.60, 288,928.80 and 163,070.40

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Solution

The fourth proportional to 192,813.60, 288,928.80 and 163,070.40 is: 244,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,813.60 : 288,928.80 = 163,070.40 : x
  2. Step 2: Convert to fraction form
    192,813.60/288,928.80 = 163,070.40/x
  3. Step 3: Cross multiply
    192,813.60x = 288,928.80 × 163,070.40
  4. Step 4: Simplify right side
    192,813.60x = 47,115,734,987.52
  5. Step 5: Solve for x
    x = 47,115,734,987.52/192,813.60
  6. Step 6: Final answer
    x = 244,358.98

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1.5x scale

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.