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Finding the Fourth Proportional to 610,813.17, 842,893.74 and 338,878.17

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Solution

The fourth proportional to 610,813.17, 842,893.74 and 338,878.17 is: 467,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,813.17 : 842,893.74 = 338,878.17 : x
  2. Step 2: Convert to fraction form
    610,813.17/842,893.74 = 338,878.17/x
  3. Step 3: Cross multiply
    610,813.17x = 842,893.74 × 338,878.17
  4. Step 4: Simplify right side
    610,813.17x = 285,638,288,115.66
  5. Step 5: Solve for x
    x = 285,638,288,115.66/610,813.17
  6. Step 6: Final answer
    x = 467,636.10

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1.5x scale

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.