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Finding the Fourth Proportional to 68,698,972.80, 103,048,459.20 and 59,345,611.20

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Solution

The fourth proportional to 68,698,972.80, 103,048,459.20 and 59,345,611.20 is: 89,018,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,698,972.80 : 103,048,459.20 = 59,345,611.20 : x
  2. Step 2: Convert to fraction form
    68,698,972.80/103,048,459.20 = 59,345,611.20/x
  3. Step 3: Cross multiply
    68,698,972.80x = 103,048,459.20 × 59,345,611.20
  4. Step 4: Simplify right side
    68,698,972.80x = 6,115,473,794,442,264
  5. Step 5: Solve for x
    x = 6,115,473,794,442,264/68,698,972.80
  6. Step 6: Final answer
    x = 89,018,416.80

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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.