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Finding the Fourth Proportional to 282,500.73, 389,853.86 and 153,440.45

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Solution

The fourth proportional to 282,500.73, 389,853.86 and 153,440.45 is: 211,749.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,500.73 : 389,853.86 = 153,440.45 : x
  2. Step 2: Convert to fraction form
    282,500.73/389,853.86 = 153,440.45/x
  3. Step 3: Cross multiply
    282,500.73x = 389,853.86 × 153,440.45
  4. Step 4: Simplify right side
    282,500.73x = 59,819,351,712.64
  5. Step 5: Solve for x
    x = 59,819,351,712.64/282,500.73
  6. Step 6: Final answer
    x = 211,749.37

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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.