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Finding the Fourth Proportional to 668,661.87, 922,753.38 and 382,188.11

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Solution

The fourth proportional to 668,661.87, 922,753.38 and 382,188.11 is: 527,419.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,661.87 : 922,753.38 = 382,188.11 : x
  2. Step 2: Convert to fraction form
    668,661.87/922,753.38 = 382,188.11/x
  3. Step 3: Cross multiply
    668,661.87x = 922,753.38 × 382,188.11
  4. Step 4: Simplify right side
    668,661.87x = 352,665,363,773.60
  5. Step 5: Solve for x
    x = 352,665,363,773.60/668,661.87
  6. Step 6: Final answer
    x = 527,419.58

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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.