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Finding the Fourth Proportional to 506,455.80, 759,683.70 and 206,936.10

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Solution

The fourth proportional to 506,455.80, 759,683.70 and 206,936.10 is: 310,404.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,455.80 : 759,683.70 = 206,936.10 : x
  2. Step 2: Convert to fraction form
    506,455.80/759,683.70 = 206,936.10/x
  3. Step 3: Cross multiply
    506,455.80x = 759,683.70 × 206,936.10
  4. Step 4: Simplify right side
    506,455.80x = 157,205,986,335.00
  5. Step 5: Solve for x
    x = 157,205,986,335.00/506,455.80
  6. Step 6: Final answer
    x = 310,404.16

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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.