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Finding the Fourth Proportional to 172,956.79, 259,442.93 and 53,005.06

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Solution

The fourth proportional to 172,956.79, 259,442.93 and 53,005.06 is: 79,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,956.79 : 259,442.93 = 53,005.06 : x
  2. Step 2: Convert to fraction form
    172,956.79/259,442.93 = 53,005.06/x
  3. Step 3: Cross multiply
    172,956.79x = 259,442.93 × 53,005.06
  4. Step 4: Simplify right side
    172,956.79x = 13,751,788,071.23
  5. Step 5: Solve for x
    x = 13,751,788,071.23/172,956.79
  6. Step 6: Final answer
    x = 79,509.96

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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.