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Finding the Fourth Proportional to 698,434.16, 963,845.88 and 396,630.32

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Solution

The fourth proportional to 698,434.16, 963,845.88 and 396,630.32 is: 547,353.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,434.16 : 963,845.88 = 396,630.32 : x
  2. Step 2: Convert to fraction form
    698,434.16/963,845.88 = 396,630.32/x
  3. Step 3: Cross multiply
    698,434.16x = 963,845.88 × 396,630.32
  4. Step 4: Simplify right side
    698,434.16x = 382,290,499,815.08
  5. Step 5: Solve for x
    x = 382,290,499,815.08/698,434.16
  6. Step 6: Final answer
    x = 547,353.67

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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.