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Finding the Fourth Proportional to 211,737.60, 317,606.40 and 111,859.20

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Solution

The fourth proportional to 211,737.60, 317,606.40 and 111,859.20 is: 167,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,737.60 : 317,606.40 = 111,859.20 : x
  2. Step 2: Convert to fraction form
    211,737.60/317,606.40 = 111,859.20/x
  3. Step 3: Cross multiply
    211,737.60x = 317,606.40 × 111,859.20
  4. Step 4: Simplify right side
    211,737.60x = 35,527,197,818.88
  5. Step 5: Solve for x
    x = 35,527,197,818.88/211,737.60
  6. Step 6: Final answer
    x = 167,788.80

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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.