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Finding the Fourth Proportional to 617,930, 926,900.68 and 243,953

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Solution

The fourth proportional to 617,930, 926,900.68 and 243,953 is: 365,931.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,930 : 926,900.68 = 243,953 : x
  2. Step 2: Convert to fraction form
    617,930/926,900.68 = 243,953/x
  3. Step 3: Cross multiply
    617,930x = 926,900.68 × 243,953
  4. Step 4: Simplify right side
    617,930x = 226,120,201,588.04
  5. Step 5: Solve for x
    x = 226,120,201,588.04/617,930
  6. Step 6: Final answer
    x = 365,931.74

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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.