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Finding the Fourth Proportional to 18,979,596.22, 28,463,506.23 and 6,847,482.58

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Solution

The fourth proportional to 18,979,596.22, 28,463,506.23 and 6,847,482.58 is: 10,269,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979,596.22 : 28,463,506.23 = 6,847,482.58 : x
  2. Step 2: Convert to fraction form
    18,979,596.22/28,463,506.23 = 6,847,482.58/x
  3. Step 3: Cross multiply
    18,979,596.22x = 28,463,506.23 × 6,847,482.58
  4. Step 4: Simplify right side
    18,979,596.22x = 194,903,363,075,646.47
  5. Step 5: Solve for x
    x = 194,903,363,075,646.47/18,979,596.22
  6. Step 6: Final answer
    x = 10,269,099.55

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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.