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Finding the Fourth Proportional to 680,659.84, 937,284.77 and 665,555.50

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Solution

The fourth proportional to 680,659.84, 937,284.77 and 665,555.50 is: 916,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,659.84 : 937,284.77 = 665,555.50 : x
  2. Step 2: Convert to fraction form
    680,659.84/937,284.77 = 665,555.50/x
  3. Step 3: Cross multiply
    680,659.84x = 937,284.77 × 665,555.50
  4. Step 4: Simplify right side
    680,659.84x = 623,815,025,725.53
  5. Step 5: Solve for x
    x = 623,815,025,725.53/680,659.84
  6. Step 6: Final answer
    x = 916,485.73

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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.