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Finding the Fourth Proportional to 18,388,751.16, 25,376,476.30 and 10,658,277.40

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Solution

The fourth proportional to 18,388,751.16, 25,376,476.30 and 10,658,277.40 is: 14,708,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388,751.16 : 25,376,476.30 = 10,658,277.40 : x
  2. Step 2: Convert to fraction form
    18,388,751.16/25,376,476.30 = 10,658,277.40/x
  3. Step 3: Cross multiply
    18,388,751.16x = 25,376,476.30 × 10,658,277.40
  4. Step 4: Simplify right side
    18,388,751.16x = 270,469,523,839,925.62
  5. Step 5: Solve for x
    x = 270,469,523,839,925.62/18,388,751.16
  6. Step 6: Final answer
    x = 14,708,422.64

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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.