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Finding the Fourth Proportional to 70,425,198.40, 105,637,797.60 and 61,467,246.40

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Solution

The fourth proportional to 70,425,198.40, 105,637,797.60 and 61,467,246.40 is: 92,200,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,425,198.40 : 105,637,797.60 = 61,467,246.40 : x
  2. Step 2: Convert to fraction form
    70,425,198.40/105,637,797.60 = 61,467,246.40/x
  3. Step 3: Cross multiply
    70,425,198.40x = 105,637,797.60 × 61,467,246.40
  4. Step 4: Simplify right side
    70,425,198.40x = 6,493,264,534,232,528
  5. Step 5: Solve for x
    x = 6,493,264,534,232,528/70,425,198.40
  6. Step 6: Final answer
    x = 92,200,869.60

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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.