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Finding the Fourth Proportional to 657,605.59, 907,237.51 and 381,916.51

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Solution

The fourth proportional to 657,605.59, 907,237.51 and 381,916.51 is: 526,894.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,605.59 : 907,237.51 = 381,916.51 : x
  2. Step 2: Convert to fraction form
    657,605.59/907,237.51 = 381,916.51/x
  3. Step 3: Cross multiply
    657,605.59x = 907,237.51 × 381,916.51
  4. Step 4: Simplify right side
    657,605.59x = 346,488,987,555.20
  5. Step 5: Solve for x
    x = 346,488,987,555.20/657,605.59
  6. Step 6: Final answer
    x = 526,894.83

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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.