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Finding the Fourth Proportional to 266,805.50, 400,261.79 and 98,326.69

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Solution

The fourth proportional to 266,805.50, 400,261.79 and 98,326.69 is: 147,509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,805.50 : 400,261.79 = 98,326.69 : x
  2. Step 2: Convert to fraction form
    266,805.50/400,261.79 = 98,326.69/x
  3. Step 3: Cross multiply
    266,805.50x = 400,261.79 × 98,326.69
  4. Step 4: Simplify right side
    266,805.50x = 39,356,416,189.34
  5. Step 5: Solve for x
    x = 39,356,416,189.34/266,805.50
  6. Step 6: Final answer
    x = 147,509.77

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1.5x scale

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.