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Finding the Fourth Proportional to 15,522,007.80, 21,702,467.40 and 15,522,007.80

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Solution

The fourth proportional to 15,522,007.80, 21,702,467.40 and 15,522,007.80 is: 21,702,467.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522,007.80 : 21,702,467.40 = 15,522,007.80 : x
  2. Step 2: Convert to fraction form
    15,522,007.80/21,702,467.40 = 15,522,007.80/x
  3. Step 3: Cross multiply
    15,522,007.80x = 21,702,467.40 × 15,522,007.80
  4. Step 4: Simplify right side
    15,522,007.80x = 336,865,868,262,045.69
  5. Step 5: Solve for x
    x = 336,865,868,262,045.69/15,522,007.80
  6. Step 6: Final answer
    x = 21,702,467.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.