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Finding the Fourth Proportional to 1,889,632.80, 2,834,449.20 and 1,133,805.60

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Solution

The fourth proportional to 1,889,632.80, 2,834,449.20 and 1,133,805.60 is: 1,700,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889,632.80 : 2,834,449.20 = 1,133,805.60 : x
  2. Step 2: Convert to fraction form
    1,889,632.80/2,834,449.20 = 1,133,805.60/x
  3. Step 3: Cross multiply
    1,889,632.80x = 2,834,449.20 × 1,133,805.60
  4. Step 4: Simplify right side
    1,889,632.80x = 3,213,714,375,875.52
  5. Step 5: Solve for x
    x = 3,213,714,375,875.52/1,889,632.80
  6. Step 6: Final answer
    x = 1,700,708.40

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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.