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Finding the Fourth Proportional to 1,292,914.56, 1,784,346.16 and 719,954.56

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Solution

The fourth proportional to 1,292,914.56, 1,784,346.16 and 719,954.56 is: 993,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,914.56 : 1,784,346.16 = 719,954.56 : x
  2. Step 2: Convert to fraction form
    1,292,914.56/1,784,346.16 = 719,954.56/x
  3. Step 3: Cross multiply
    1,292,914.56x = 1,784,346.16 × 719,954.56
  4. Step 4: Simplify right side
    1,292,914.56x = 1,284,648,154,510.49
  5. Step 5: Solve for x
    x = 1,284,648,154,510.49/1,292,914.56
  6. Step 6: Final answer
    x = 993,606.38

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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.