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Finding the Fourth Proportional to 70,683,616.60, 106,025,424.90 and 39,946,643.80

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Solution

The fourth proportional to 70,683,616.60, 106,025,424.90 and 39,946,643.80 is: 59,919,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,683,616.60 : 106,025,424.90 = 39,946,643.80 : x
  2. Step 2: Convert to fraction form
    70,683,616.60/106,025,424.90 = 39,946,643.80/x
  3. Step 3: Cross multiply
    70,683,616.60x = 106,025,424.90 × 39,946,643.80
  4. Step 4: Simplify right side
    70,683,616.60x = 4,235,359,882,223,950.50
  5. Step 5: Solve for x
    x = 4,235,359,882,223,950.50/70,683,616.60
  6. Step 6: Final answer
    x = 59,919,965.70

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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.