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Finding the Fourth Proportional to 365,362.65, 548,031.62 and 128,699.15

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Solution

The fourth proportional to 365,362.65, 548,031.62 and 128,699.15 is: 193,044.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,362.65 : 548,031.62 = 128,699.15 : x
  2. Step 2: Convert to fraction form
    365,362.65/548,031.62 = 128,699.15/x
  3. Step 3: Cross multiply
    365,362.65x = 548,031.62 × 128,699.15
  4. Step 4: Simplify right side
    365,362.65x = 70,531,201,248.71
  5. Step 5: Solve for x
    x = 70,531,201,248.71/365,362.65
  6. Step 6: Final answer
    x = 193,044.37

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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.