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Finding the Fourth Proportional to 211,793.18, 317,596.48 and 99,505.32

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Solution

The fourth proportional to 211,793.18, 317,596.48 and 99,505.32 is: 149,214.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,793.18 : 317,596.48 = 99,505.32 : x
  2. Step 2: Convert to fraction form
    211,793.18/317,596.48 = 99,505.32/x
  3. Step 3: Cross multiply
    211,793.18x = 317,596.48 × 99,505.32
  4. Step 4: Simplify right side
    211,793.18x = 31,602,539,373.27
  5. Step 5: Solve for x
    x = 31,602,539,373.27/211,793.18
  6. Step 6: Final answer
    x = 149,214.15

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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.