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Finding the Fourth Proportional to 472,847.60, 709,336.20 and 157,271.60

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Solution

The fourth proportional to 472,847.60, 709,336.20 and 157,271.60 is: 235,928.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,847.60 : 709,336.20 = 157,271.60 : x
  2. Step 2: Convert to fraction form
    472,847.60/709,336.20 = 157,271.60/x
  3. Step 3: Cross multiply
    472,847.60x = 709,336.20 × 157,271.60
  4. Step 4: Simplify right side
    472,847.60x = 111,558,439,111.92
  5. Step 5: Solve for x
    x = 111,558,439,111.92/472,847.60
  6. Step 6: Final answer
    x = 235,928.95

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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.