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Finding the Fourth Proportional to 112,703.99, 169,055.92 and 28,469.15

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Solution

The fourth proportional to 112,703.99, 169,055.92 and 28,469.15 is: 42,703.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,703.99 : 169,055.92 = 28,469.15 : x
  2. Step 2: Convert to fraction form
    112,703.99/169,055.92 = 28,469.15/x
  3. Step 3: Cross multiply
    112,703.99x = 169,055.92 × 28,469.15
  4. Step 4: Simplify right side
    112,703.99x = 4,812,877,428.42
  5. Step 5: Solve for x
    x = 4,812,877,428.42/112,703.99
  6. Step 6: Final answer
    x = 42,703.70

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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.