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Finding the Fourth Proportional to 282,461.15, 389,796.71 and 153,399.71

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Solution

The fourth proportional to 282,461.15, 389,796.71 and 153,399.71 is: 211,691.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,461.15 : 389,796.71 = 153,399.71 : x
  2. Step 2: Convert to fraction form
    282,461.15/389,796.71 = 153,399.71/x
  3. Step 3: Cross multiply
    282,461.15x = 389,796.71 × 153,399.71
  4. Step 4: Simplify right side
    282,461.15x = 59,794,699,556.97
  5. Step 5: Solve for x
    x = 59,794,699,556.97/282,461.15
  6. Step 6: Final answer
    x = 211,691.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.