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Finding the Fourth Proportional to 211,608.95, 317,380.62 and 61,809.02

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Solution

The fourth proportional to 211,608.95, 317,380.62 and 61,809.02 is: 92,703.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,608.95 : 317,380.62 = 61,809.02 : x
  2. Step 2: Convert to fraction form
    211,608.95/317,380.62 = 61,809.02/x
  3. Step 3: Cross multiply
    211,608.95x = 317,380.62 × 61,809.02
  4. Step 4: Simplify right side
    211,608.95x = 19,616,983,502.29
  5. Step 5: Solve for x
    x = 19,616,983,502.29/211,608.95
  6. Step 6: Final answer
    x = 92,703.94

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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.