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Finding the Fourth Proportional to 359,092.40, 538,643.28 and 172,060.16

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Solution

The fourth proportional to 359,092.40, 538,643.28 and 172,060.16 is: 258,092.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,092.40 : 538,643.28 = 172,060.16 : x
  2. Step 2: Convert to fraction form
    359,092.40/538,643.28 = 172,060.16/x
  3. Step 3: Cross multiply
    359,092.40x = 538,643.28 × 172,060.16
  4. Step 4: Simplify right side
    359,092.40x = 92,679,048,939.72
  5. Step 5: Solve for x
    x = 92,679,048,939.72/359,092.40
  6. Step 6: Final answer
    x = 258,092.48

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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.