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Finding the Fourth Proportional to 3,131,567.90, 4,697,351.85 and 3,131,567.90

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Solution

The fourth proportional to 3,131,567.90, 4,697,351.85 and 3,131,567.90 is: 4,697,351.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131,567.90 : 4,697,351.85 = 3,131,567.90 : x
  2. Step 2: Convert to fraction form
    3,131,567.90/4,697,351.85 = 3,131,567.90/x
  3. Step 3: Cross multiply
    3,131,567.90x = 4,697,351.85 × 3,131,567.90
  4. Step 4: Simplify right side
    3,131,567.90x = 14,710,076,268,465.61
  5. Step 5: Solve for x
    x = 14,710,076,268,465.61/3,131,567.90
  6. Step 6: Final answer
    x = 4,697,351.85

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Similar ratio
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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.