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Finding the Fourth Proportional to 19,931,604.30, 27,923,141.70 and 19,931,604.30

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Solution

The fourth proportional to 19,931,604.30, 27,923,141.70 and 19,931,604.30 is: 27,923,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931,604.30 : 27,923,141.70 = 19,931,604.30 : x
  2. Step 2: Convert to fraction form
    19,931,604.30/27,923,141.70 = 19,931,604.30/x
  3. Step 3: Cross multiply
    19,931,604.30x = 27,923,141.70 × 19,931,604.30
  4. Step 4: Simplify right side
    19,931,604.30x = 556,553,011,177,229.31
  5. Step 5: Solve for x
    x = 556,553,011,177,229.31/19,931,604.30
  6. Step 6: Final answer
    x = 27,923,141.70

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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.