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Finding the Fourth Proportional to 172,953.90, 257,711.49 and 154,089

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Solution

The fourth proportional to 172,953.90, 257,711.49 and 154,089 is: 229,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,953.90 : 257,711.49 = 154,089 : x
  2. Step 2: Convert to fraction form
    172,953.90/257,711.49 = 154,089/x
  3. Step 3: Cross multiply
    172,953.90x = 257,711.49 × 154,089
  4. Step 4: Simplify right side
    172,953.90x = 39,710,505,782.61
  5. Step 5: Solve for x
    x = 39,710,505,782.61/172,953.90
  6. Step 6: Final answer
    x = 229,601.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.