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Finding the Fourth Proportional to 14,349,978.72, 19,802,956.70 and 7,823,606.46

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Solution

The fourth proportional to 14,349,978.72, 19,802,956.70 and 7,823,606.46 is: 10,796,569.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,349,978.72 : 19,802,956.70 = 7,823,606.46 : x
  2. Step 2: Convert to fraction form
    14,349,978.72/19,802,956.70 = 7,823,606.46/x
  3. Step 3: Cross multiply
    14,349,978.72x = 19,802,956.70 × 7,823,606.46
  4. Step 4: Simplify right side
    14,349,978.72x = 154,930,539,965,220.28
  5. Step 5: Solve for x
    x = 154,930,539,965,220.28/14,349,978.72
  6. Step 6: Final answer
    x = 10,796,569.32

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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.