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Finding the Fourth Proportional to 59,987,228.80, 89,980,843.20 and 39,579,894.40

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Solution

The fourth proportional to 59,987,228.80, 89,980,843.20 and 39,579,894.40 is: 59,369,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,987,228.80 : 89,980,843.20 = 39,579,894.40 : x
  2. Step 2: Convert to fraction form
    59,987,228.80/89,980,843.20 = 39,579,894.40/x
  3. Step 3: Cross multiply
    59,987,228.80x = 89,980,843.20 × 39,579,894.40
  4. Step 4: Simplify right side
    59,987,228.80x = 3,561,432,271,878,958
  5. Step 5: Solve for x
    x = 3,561,432,271,878,958/59,987,228.80
  6. Step 6: Final answer
    x = 59,369,841.60

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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.