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Finding the Fourth Proportional to 70,009,861.60, 104,846,830.80 and 34,066,079.20

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Solution

The fourth proportional to 70,009,861.60, 104,846,830.80 and 34,066,079.20 is: 51,017,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,009,861.60 : 104,846,830.80 = 34,066,079.20 : x
  2. Step 2: Convert to fraction form
    70,009,861.60/104,846,830.80 = 34,066,079.20/x
  3. Step 3: Cross multiply
    70,009,861.60x = 104,846,830.80 × 34,066,079.20
  4. Step 4: Simplify right side
    70,009,861.60x = 3,571,720,441,901,799.50
  5. Step 5: Solve for x
    x = 3,571,720,441,901,799.50/70,009,861.60
  6. Step 6: Final answer
    x = 51,017,390.41

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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.