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Finding the Fourth Proportional to 858,784.60, 1,200,723.80 and 858,784.60

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Solution

The fourth proportional to 858,784.60, 1,200,723.80 and 858,784.60 is: 1,200,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,784.60 : 1,200,723.80 = 858,784.60 : x
  2. Step 2: Convert to fraction form
    858,784.60/1,200,723.80 = 858,784.60/x
  3. Step 3: Cross multiply
    858,784.60x = 1,200,723.80 × 858,784.60
  4. Step 4: Simplify right side
    858,784.60x = 1,031,163,108,293.48
  5. Step 5: Solve for x
    x = 1,031,163,108,293.48/858,784.60
  6. Step 6: Final answer
    x = 1,200,723.80

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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.