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Finding the Fourth Proportional to 443,391, 611,879.65 and 242,187

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Solution

The fourth proportional to 443,391, 611,879.65 and 242,187 is: 334,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,391 : 611,879.65 = 242,187 : x
  2. Step 2: Convert to fraction form
    443,391/611,879.65 = 242,187/x
  3. Step 3: Cross multiply
    443,391x = 611,879.65 × 242,187
  4. Step 4: Simplify right side
    443,391x = 148,189,296,189.08
  5. Step 5: Solve for x
    x = 148,189,296,189.08/443,391
  6. Step 6: Final answer
    x = 334,218.10

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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.