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Finding the Fourth Proportional to 356,556.72, 534,830.95 and 86,686.38

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Solution

The fourth proportional to 356,556.72, 534,830.95 and 86,686.38 is: 130,028.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,556.72 : 534,830.95 = 86,686.38 : x
  2. Step 2: Convert to fraction form
    356,556.72/534,830.95 = 86,686.38/x
  3. Step 3: Cross multiply
    356,556.72x = 534,830.95 × 86,686.38
  4. Step 4: Simplify right side
    356,556.72x = 46,362,561,081.44
  5. Step 5: Solve for x
    x = 46,362,561,081.44/356,556.72
  6. Step 6: Final answer
    x = 130,028.57

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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.