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Finding the Fourth Proportional to 70,094,327.20, 105,141,490.80 and 49,686,992.80

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Solution

The fourth proportional to 70,094,327.20, 105,141,490.80 and 49,686,992.80 is: 74,530,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,094,327.20 : 105,141,490.80 = 49,686,992.80 : x
  2. Step 2: Convert to fraction form
    70,094,327.20/105,141,490.80 = 49,686,992.80/x
  3. Step 3: Cross multiply
    70,094,327.20x = 105,141,490.80 × 49,686,992.80
  4. Step 4: Simplify right side
    70,094,327.20x = 5,224,164,496,360,866
  5. Step 5: Solve for x
    x = 5,224,164,496,360,866/70,094,327.20
  6. Step 6: Final answer
    x = 74,530,489.20

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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.