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Finding the Fourth Proportional to 443,486.59, 665,703.51 and 190,892.19

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Solution

The fourth proportional to 443,486.59, 665,703.51 and 190,892.19 is: 286,542.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,486.59 : 665,703.51 = 190,892.19 : x
  2. Step 2: Convert to fraction form
    443,486.59/665,703.51 = 190,892.19/x
  3. Step 3: Cross multiply
    443,486.59x = 665,703.51 × 190,892.19
  4. Step 4: Simplify right side
    443,486.59x = 127,077,600,914.59
  5. Step 5: Solve for x
    x = 127,077,600,914.59/443,486.59
  6. Step 6: Final answer
    x = 286,542.15

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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.