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Finding the Fourth Proportional to 30,587,686.80, 45,881,530.20 and 16,982,797.20

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Solution

The fourth proportional to 30,587,686.80, 45,881,530.20 and 16,982,797.20 is: 25,474,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587,686.80 : 45,881,530.20 = 16,982,797.20 : x
  2. Step 2: Convert to fraction form
    30,587,686.80/45,881,530.20 = 16,982,797.20/x
  3. Step 3: Cross multiply
    30,587,686.80x = 45,881,530.20 × 16,982,797.20
  4. Step 4: Simplify right side
    30,587,686.80x = 779,196,722,612,275.50
  5. Step 5: Solve for x
    x = 779,196,722,612,275.50/30,587,686.80
  6. Step 6: Final answer
    x = 25,474,195.80

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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.