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Finding the Fourth Proportional to 899,894, 1,241,879.64 and 497,511.92

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Solution

The fourth proportional to 899,894, 1,241,879.64 and 497,511.92 is: 686,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,894 : 1,241,879.64 = 497,511.92 : x
  2. Step 2: Convert to fraction form
    899,894/1,241,879.64 = 497,511.92/x
  3. Step 3: Cross multiply
    899,894x = 1,241,879.64 × 497,511.92
  4. Step 4: Simplify right side
    899,894x = 617,849,924,105.31
  5. Step 5: Solve for x
    x = 617,849,924,105.31/899,894
  6. Step 6: Final answer
    x = 686,580.78

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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.