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Finding the Fourth Proportional to 676,807.95, 933,995.12 and 404,887.17

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Solution

The fourth proportional to 676,807.95, 933,995.12 and 404,887.17 is: 558,744.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,807.95 : 933,995.12 = 404,887.17 : x
  2. Step 2: Convert to fraction form
    676,807.95/933,995.12 = 404,887.17/x
  3. Step 3: Cross multiply
    676,807.95x = 933,995.12 × 404,887.17
  4. Step 4: Simplify right side
    676,807.95x = 378,162,640,930.61
  5. Step 5: Solve for x
    x = 378,162,640,930.61/676,807.95
  6. Step 6: Final answer
    x = 558,744.38

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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.