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Finding the Fourth Proportional to 282,499.73, 389,852.48 and 153,439.45

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Solution

The fourth proportional to 282,499.73, 389,852.48 and 153,439.45 is: 211,747.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,499.73 : 389,852.48 = 153,439.45 : x
  2. Step 2: Convert to fraction form
    282,499.73/389,852.48 = 153,439.45/x
  3. Step 3: Cross multiply
    282,499.73x = 389,852.48 × 153,439.45
  4. Step 4: Simplify right side
    282,499.73x = 59,818,750,112.34
  5. Step 5: Solve for x
    x = 59,818,750,112.34/282,499.73
  6. Step 6: Final answer
    x = 211,747.99

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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.