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Finding the Fourth Proportional to 403,560,429.80, 605,340,644.70 and 112,472,479.40

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Solution

The fourth proportional to 403,560,429.80, 605,340,644.70 and 112,472,479.40 is: 168,708,719.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,560,429.80 : 605,340,644.70 = 112,472,479.40 : x
  2. Step 2: Convert to fraction form
    403,560,429.80/605,340,644.70 = 112,472,479.40/x
  3. Step 3: Cross multiply
    403,560,429.80x = 605,340,644.70 × 112,472,479.40
  4. Step 4: Simplify right side
    403,560,429.80x = 68,084,163,191,003,480
  5. Step 5: Solve for x
    x = 68,084,163,191,003,480/403,560,429.80
  6. Step 6: Final answer
    x = 168,708,719.10

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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.