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Finding the Fourth Proportional to 443,855.28, 611,800.54 and 346,887.88

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Solution

The fourth proportional to 443,855.28, 611,800.54 and 346,887.88 is: 478,142.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,855.28 : 611,800.54 = 346,887.88 : x
  2. Step 2: Convert to fraction form
    443,855.28/611,800.54 = 346,887.88/x
  3. Step 3: Cross multiply
    443,855.28x = 611,800.54 × 346,887.88
  4. Step 4: Simplify right side
    443,855.28x = 212,226,192,303.46
  5. Step 5: Solve for x
    x = 212,226,192,303.46/443,855.28
  6. Step 6: Final answer
    x = 478,142.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.