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Finding the Fourth Proportional to 56,170,880.20, 78,745,400.60 and 56,170,880.20

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Solution

The fourth proportional to 56,170,880.20, 78,745,400.60 and 56,170,880.20 is: 78,745,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,170,880.20 : 78,745,400.60 = 56,170,880.20 : x
  2. Step 2: Convert to fraction form
    56,170,880.20/78,745,400.60 = 56,170,880.20/x
  3. Step 3: Cross multiply
    56,170,880.20x = 78,745,400.60 × 56,170,880.20
  4. Step 4: Simplify right side
    56,170,880.20x = 4,423,198,463,403,608
  5. Step 5: Solve for x
    x = 4,423,198,463,403,608/56,170,880.20
  6. Step 6: Final answer
    x = 78,745,400.60

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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.