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Finding the Fourth Proportional to 592,431.89, 889,008.69 and 213,320.91

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Solution

The fourth proportional to 592,431.89, 889,008.69 and 213,320.91 is: 320,111.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,431.89 : 889,008.69 = 213,320.91 : x
  2. Step 2: Convert to fraction form
    592,431.89/889,008.69 = 213,320.91/x
  3. Step 3: Cross multiply
    592,431.89x = 889,008.69 × 213,320.91
  4. Step 4: Simplify right side
    592,431.89x = 189,644,142,748.71
  5. Step 5: Solve for x
    x = 189,644,142,748.71/592,431.89
  6. Step 6: Final answer
    x = 320,111.30

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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.