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Finding the Fourth Proportional to 8,870,657.85, 12,241,436.52 and 5,149,834.11

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Solution

The fourth proportional to 8,870,657.85, 12,241,436.52 and 5,149,834.11 is: 7,106,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870,657.85 : 12,241,436.52 = 5,149,834.11 : x
  2. Step 2: Convert to fraction form
    8,870,657.85/12,241,436.52 = 5,149,834.11/x
  3. Step 3: Cross multiply
    8,870,657.85x = 12,241,436.52 × 5,149,834.11
  4. Step 4: Simplify right side
    8,870,657.85x = 63,041,367,346,095.70
  5. Step 5: Solve for x
    x = 63,041,367,346,095.70/8,870,657.85
  6. Step 6: Final answer
    x = 7,106,729.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.