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Finding the Fourth Proportional to 1,354,944.92, 1,865,130.10 and 1,171,099.01

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Solution

The fourth proportional to 1,354,944.92, 1,865,130.10 and 1,171,099.01 is: 1,612,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,944.92 : 1,865,130.10 = 1,171,099.01 : x
  2. Step 2: Convert to fraction form
    1,354,944.92/1,865,130.10 = 1,171,099.01/x
  3. Step 3: Cross multiply
    1,354,944.92x = 1,865,130.10 × 1,171,099.01
  4. Step 4: Simplify right side
    1,354,944.92x = 2,184,252,015,366.28
  5. Step 5: Solve for x
    x = 2,184,252,015,366.28/1,354,944.92
  6. Step 6: Final answer
    x = 1,612,059.64

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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.