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Finding the Fourth Proportional to 56,705,311.20, 85,057,966.80 and 56,705,311.20

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Solution

The fourth proportional to 56,705,311.20, 85,057,966.80 and 56,705,311.20 is: 85,057,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,705,311.20 : 85,057,966.80 = 56,705,311.20 : x
  2. Step 2: Convert to fraction form
    56,705,311.20/85,057,966.80 = 56,705,311.20/x
  3. Step 3: Cross multiply
    56,705,311.20x = 85,057,966.80 × 56,705,311.20
  4. Step 4: Simplify right side
    56,705,311.20x = 4,823,238,477,433,268
  5. Step 5: Solve for x
    x = 4,823,238,477,433,268/56,705,311.20
  6. Step 6: Final answer
    x = 85,057,966.80

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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.