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Finding the Fourth Proportional to 368,859.80, 553,289.70 and 336,200.60

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Solution

The fourth proportional to 368,859.80, 553,289.70 and 336,200.60 is: 504,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,859.80 : 553,289.70 = 336,200.60 : x
  2. Step 2: Convert to fraction form
    368,859.80/553,289.70 = 336,200.60/x
  3. Step 3: Cross multiply
    368,859.80x = 553,289.70 × 336,200.60
  4. Step 4: Simplify right side
    368,859.80x = 186,016,329,113.82
  5. Step 5: Solve for x
    x = 186,016,329,113.82/368,859.80
  6. Step 6: Final answer
    x = 504,300.90

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Similar ratio
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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.