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Finding the Fourth Proportional to 13,771,927.19, 20,659,047.17 and 4,187,388.76

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Solution

The fourth proportional to 13,771,927.19, 20,659,047.17 and 4,187,388.76 is: 6,281,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771,927.19 : 20,659,047.17 = 4,187,388.76 : x
  2. Step 2: Convert to fraction form
    13,771,927.19/20,659,047.17 = 4,187,388.76/x
  3. Step 3: Cross multiply
    13,771,927.19x = 20,659,047.17 × 4,187,388.76
  4. Step 4: Simplify right side
    13,771,927.19x = 86,507,461,839,383.23
  5. Step 5: Solve for x
    x = 86,507,461,839,383.23/13,771,927.19
  6. Step 6: Final answer
    x = 6,281,434.74

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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.