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Finding the Fourth Proportional to 922,127.40, 1,383,191.10 and 764,663.40

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Solution

The fourth proportional to 922,127.40, 1,383,191.10 and 764,663.40 is: 1,146,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,127.40 : 1,383,191.10 = 764,663.40 : x
  2. Step 2: Convert to fraction form
    922,127.40/1,383,191.10 = 764,663.40/x
  3. Step 3: Cross multiply
    922,127.40x = 1,383,191.10 × 764,663.40
  4. Step 4: Simplify right side
    922,127.40x = 1,057,675,609,375.74
  5. Step 5: Solve for x
    x = 1,057,675,609,375.74/922,127.40
  6. Step 6: Final answer
    x = 1,146,995.10

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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.