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Finding the Fourth Proportional to 1,077,807.60, 1,613,946.60 and 1,028,041.20

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Solution

The fourth proportional to 1,077,807.60, 1,613,946.60 and 1,028,041.20 is: 1,539,424.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,807.60 : 1,613,946.60 = 1,028,041.20 : x
  2. Step 2: Convert to fraction form
    1,077,807.60/1,613,946.60 = 1,028,041.20/x
  3. Step 3: Cross multiply
    1,077,807.60x = 1,613,946.60 × 1,028,041.20
  4. Step 4: Simplify right side
    1,077,807.60x = 1,659,203,599,399.92
  5. Step 5: Solve for x
    x = 1,659,203,599,399.92/1,077,807.60
  6. Step 6: Final answer
    x = 1,539,424.66

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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.