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Finding the Fourth Proportional to 70,324,977.60, 105,487,466.40 and 47,366,726.40

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Solution

The fourth proportional to 70,324,977.60, 105,487,466.40 and 47,366,726.40 is: 71,050,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,324,977.60 : 105,487,466.40 = 47,366,726.40 : x
  2. Step 2: Convert to fraction form
    70,324,977.60/105,487,466.40 = 47,366,726.40/x
  3. Step 3: Cross multiply
    70,324,977.60x = 105,487,466.40 × 47,366,726.40
  4. Step 4: Simplify right side
    70,324,977.60x = 4,996,595,959,597,993
  5. Step 5: Solve for x
    x = 4,996,595,959,597,993/70,324,977.60
  6. Step 6: Final answer
    x = 71,050,089.60

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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.