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Finding the Fourth Proportional to 688,059, 949,521.96 and 386,350.20

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Solution

The fourth proportional to 688,059, 949,521.96 and 386,350.20 is: 533,163.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,059 : 949,521.96 = 386,350.20 : x
  2. Step 2: Convert to fraction form
    688,059/949,521.96 = 386,350.20/x
  3. Step 3: Cross multiply
    688,059x = 949,521.96 × 386,350.20
  4. Step 4: Simplify right side
    688,059x = 366,847,999,150.39
  5. Step 5: Solve for x
    x = 366,847,999,150.39/688,059
  6. Step 6: Final answer
    x = 533,163.58

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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.