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Finding the Fourth Proportional to 4,857,999.90, 7,286,999.85 and 4,787,141.10

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Solution

The fourth proportional to 4,857,999.90, 7,286,999.85 and 4,787,141.10 is: 7,180,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,857,999.90 : 7,286,999.85 = 4,787,141.10 : x
  2. Step 2: Convert to fraction form
    4,857,999.90/7,286,999.85 = 4,787,141.10/x
  3. Step 3: Cross multiply
    4,857,999.90x = 7,286,999.85 × 4,787,141.10
  4. Step 4: Simplify right side
    4,857,999.90x = 34,883,896,477,628.83
  5. Step 5: Solve for x
    x = 34,883,896,477,628.83/4,857,999.90
  6. Step 6: Final answer
    x = 7,180,711.65

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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.