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Finding the Fourth Proportional to 699,140.16, 964,820.16 and 397,336.32

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Solution

The fourth proportional to 699,140.16, 964,820.16 and 397,336.32 is: 548,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,140.16 : 964,820.16 = 397,336.32 : x
  2. Step 2: Convert to fraction form
    699,140.16/964,820.16 = 397,336.32/x
  3. Step 3: Cross multiply
    699,140.16x = 964,820.16 × 397,336.32
  4. Step 4: Simplify right side
    699,140.16x = 383,358,091,836.21
  5. Step 5: Solve for x
    x = 383,358,091,836.21/699,140.16
  6. Step 6: Final answer
    x = 548,327.95

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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.