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Finding the Fourth Proportional to 858,768.10, 1,200,700.70 and 858,768.10

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Solution

The fourth proportional to 858,768.10, 1,200,700.70 and 858,768.10 is: 1,200,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,768.10 : 1,200,700.70 = 858,768.10 : x
  2. Step 2: Convert to fraction form
    858,768.10/1,200,700.70 = 858,768.10/x
  3. Step 3: Cross multiply
    858,768.10x = 1,200,700.70 × 858,768.10
  4. Step 4: Simplify right side
    858,768.10x = 1,031,123,458,807.67
  5. Step 5: Solve for x
    x = 1,031,123,458,807.67/858,768.10
  6. Step 6: Final answer
    x = 1,200,700.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.