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Finding the Fourth Proportional to 444,091.30, 666,136.14 and 128,547.70

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Solution

The fourth proportional to 444,091.30, 666,136.14 and 128,547.70 is: 192,821.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,091.30 : 666,136.14 = 128,547.70 : x
  2. Step 2: Convert to fraction form
    444,091.30/666,136.14 = 128,547.70/x
  3. Step 3: Cross multiply
    444,091.30x = 666,136.14 × 128,547.70
  4. Step 4: Simplify right side
    444,091.30x = 85,630,268,683.88
  5. Step 5: Solve for x
    x = 85,630,268,683.88/444,091.30
  6. Step 6: Final answer
    x = 192,821.32

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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.