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Finding the Fourth Proportional to 5,322,460.80, 7,983,691.20 and 1,956,230.40

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Solution

The fourth proportional to 5,322,460.80, 7,983,691.20 and 1,956,230.40 is: 2,934,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322,460.80 : 7,983,691.20 = 1,956,230.40 : x
  2. Step 2: Convert to fraction form
    5,322,460.80/7,983,691.20 = 1,956,230.40/x
  3. Step 3: Cross multiply
    5,322,460.80x = 7,983,691.20 × 1,956,230.40
  4. Step 4: Simplify right side
    5,322,460.80x = 15,617,939,429,652.48
  5. Step 5: Solve for x
    x = 15,617,939,429,652.48/5,322,460.80
  6. Step 6: Final answer
    x = 2,934,345.60

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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.