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Finding the Fourth Proportional to 58,808.30, 87,768 and 53,133.18

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Solution

The fourth proportional to 58,808.30, 87,768 and 53,133.18 is: 79,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,808.30 : 87,768 = 53,133.18 : x
  2. Step 2: Convert to fraction form
    58,808.30/87,768 = 53,133.18/x
  3. Step 3: Cross multiply
    58,808.30x = 87,768 × 53,133.18
  4. Step 4: Simplify right side
    58,808.30x = 4,663,392,942.24
  5. Step 5: Solve for x
    x = 4,663,392,942.24/58,808.30
  6. Step 6: Final answer
    x = 79,298.21

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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.