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Finding the Fourth Proportional to 668,192.49, 916,993.10 and 663,468.57

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Solution

The fourth proportional to 668,192.49, 916,993.10 and 663,468.57 is: 910,510.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,192.49 : 916,993.10 = 663,468.57 : x
  2. Step 2: Convert to fraction form
    668,192.49/916,993.10 = 663,468.57/x
  3. Step 3: Cross multiply
    668,192.49x = 916,993.10 × 663,468.57
  4. Step 4: Simplify right side
    668,192.49x = 608,396,102,415.54
  5. Step 5: Solve for x
    x = 608,396,102,415.54/668,192.49
  6. Step 6: Final answer
    x = 910,510.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.