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Finding the Fourth Proportional to 18,594,003.90, 27,891,005.85 and 15,617,934.30

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Solution

The fourth proportional to 18,594,003.90, 27,891,005.85 and 15,617,934.30 is: 23,426,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,594,003.90 : 27,891,005.85 = 15,617,934.30 : x
  2. Step 2: Convert to fraction form
    18,594,003.90/27,891,005.85 = 15,617,934.30/x
  3. Step 3: Cross multiply
    18,594,003.90x = 27,891,005.85 × 15,617,934.30
  4. Step 4: Simplify right side
    18,594,003.90x = 435,599,896,926,215.69
  5. Step 5: Solve for x
    x = 435,599,896,926,215.69/18,594,003.90
  6. Step 6: Final answer
    x = 23,426,901.45

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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.