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Finding the Fourth Proportional to 64,388,328.80, 96,582,493.20 and 38,816,175.20

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Solution

The fourth proportional to 64,388,328.80, 96,582,493.20 and 38,816,175.20 is: 58,224,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,388,328.80 : 96,582,493.20 = 38,816,175.20 : x
  2. Step 2: Convert to fraction form
    64,388,328.80/96,582,493.20 = 38,816,175.20/x
  3. Step 3: Cross multiply
    64,388,328.80x = 96,582,493.20 × 38,816,175.20
  4. Step 4: Simplify right side
    64,388,328.80x = 3,748,962,977,304,009
  5. Step 5: Solve for x
    x = 3,748,962,977,304,009/64,388,328.80
  6. Step 6: Final answer
    x = 58,224,262.80

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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.