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Finding the Fourth Proportional to 51,301.65, 76,951.65 and 42,518.01

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Solution

The fourth proportional to 51,301.65, 76,951.65 and 42,518.01 is: 63,776.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,301.65 : 76,951.65 = 42,518.01 : x
  2. Step 2: Convert to fraction form
    51,301.65/76,951.65 = 42,518.01/x
  3. Step 3: Cross multiply
    51,301.65x = 76,951.65 × 42,518.01
  4. Step 4: Simplify right side
    51,301.65x = 3,271,831,024.22
  5. Step 5: Solve for x
    x = 3,271,831,024.22/51,301.65
  6. Step 6: Final answer
    x = 63,776.33

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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.