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Finding the Fourth Proportional to 225,866.48, 311,699.68 and 123,901.52

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Solution

The fourth proportional to 225,866.48, 311,699.68 and 123,901.52 is: 170,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,866.48 : 311,699.68 = 123,901.52 : x
  2. Step 2: Convert to fraction form
    225,866.48/311,699.68 = 123,901.52/x
  3. Step 3: Cross multiply
    225,866.48x = 311,699.68 × 123,901.52
  4. Step 4: Simplify right side
    225,866.48x = 38,620,062,267.26
  5. Step 5: Solve for x
    x = 38,620,062,267.26/225,866.48
  6. Step 6: Final answer
    x = 170,986.25

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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.