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Finding the Fourth Proportional to 904,708.80, 1,355,896.80 and 693,298.80

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Solution

The fourth proportional to 904,708.80, 1,355,896.80 and 693,298.80 is: 1,039,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,708.80 : 1,355,896.80 = 693,298.80 : x
  2. Step 2: Convert to fraction form
    904,708.80/1,355,896.80 = 693,298.80/x
  3. Step 3: Cross multiply
    904,708.80x = 1,355,896.80 × 693,298.80
  4. Step 4: Simplify right side
    904,708.80x = 940,041,624,363.84
  5. Step 5: Solve for x
    x = 940,041,624,363.84/904,708.80
  6. Step 6: Final answer
    x = 1,039,054.36

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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.