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Finding the Fourth Proportional to 199,653.06, 299,379.69 and 66,486.90

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Solution

The fourth proportional to 199,653.06, 299,379.69 and 66,486.90 is: 99,697.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,653.06 : 299,379.69 = 66,486.90 : x
  2. Step 2: Convert to fraction form
    199,653.06/299,379.69 = 66,486.90/x
  3. Step 3: Cross multiply
    199,653.06x = 299,379.69 × 66,486.90
  4. Step 4: Simplify right side
    199,653.06x = 19,904,827,511.06
  5. Step 5: Solve for x
    x = 19,904,827,511.06/199,653.06
  6. Step 6: Final answer
    x = 99,697.08

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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.