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Finding the Fourth Proportional to 5,458,436.40, 8,171,908.20 and 5,458,436.40

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Solution

The fourth proportional to 5,458,436.40, 8,171,908.20 and 5,458,436.40 is: 8,171,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,458,436.40 : 8,171,908.20 = 5,458,436.40 : x
  2. Step 2: Convert to fraction form
    5,458,436.40/8,171,908.20 = 5,458,436.40/x
  3. Step 3: Cross multiply
    5,458,436.40x = 8,171,908.20 × 5,458,436.40
  4. Step 4: Simplify right side
    5,458,436.40x = 44,605,841,176,338.48
  5. Step 5: Solve for x
    x = 44,605,841,176,338.48/5,458,436.40
  6. Step 6: Final answer
    x = 8,171,908.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.