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Finding the Fourth Proportional to 443,903.68, 665,782.62 and 191,116.10

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Solution

The fourth proportional to 443,903.68, 665,782.62 and 191,116.10 is: 286,642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,903.68 : 665,782.62 = 191,116.10 : x
  2. Step 2: Convert to fraction form
    443,903.68/665,782.62 = 191,116.10/x
  3. Step 3: Cross multiply
    443,903.68x = 665,782.62 × 191,116.10
  4. Step 4: Simplify right side
    443,903.68x = 127,241,777,782.18
  5. Step 5: Solve for x
    x = 127,241,777,782.18/443,903.68
  6. Step 6: Final answer
    x = 286,642.76

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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.