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Finding the Fourth Proportional to 417,683.60, 626,525.40 and 193,043.60

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Solution

The fourth proportional to 417,683.60, 626,525.40 and 193,043.60 is: 289,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,683.60 : 626,525.40 = 193,043.60 : x
  2. Step 2: Convert to fraction form
    417,683.60/626,525.40 = 193,043.60/x
  3. Step 3: Cross multiply
    417,683.60x = 626,525.40 × 193,043.60
  4. Step 4: Simplify right side
    417,683.60x = 120,946,718,707.44
  5. Step 5: Solve for x
    x = 120,946,718,707.44/417,683.60
  6. Step 6: Final answer
    x = 289,565.40

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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.