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Finding the Fourth Proportional to 443,483.10, 665,698.27 and 190,888.70

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Solution

The fourth proportional to 443,483.10, 665,698.27 and 190,888.70 is: 286,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,483.10 : 665,698.27 = 190,888.70 : x
  2. Step 2: Convert to fraction form
    443,483.10/665,698.27 = 190,888.70/x
  3. Step 3: Cross multiply
    443,483.10x = 665,698.27 × 190,888.70
  4. Step 4: Simplify right side
    443,483.10x = 127,074,273,069.61
  5. Step 5: Solve for x
    x = 127,074,273,069.61/443,483.10
  6. Step 6: Final answer
    x = 286,536.90

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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.