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Finding the Fourth Proportional to 87,021.76, 130,250.22 and 46,985.08

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Solution

The fourth proportional to 87,021.76, 130,250.22 and 46,985.08 is: 70,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,021.76 : 130,250.22 = 46,985.08 : x
  2. Step 2: Convert to fraction form
    87,021.76/130,250.22 = 46,985.08/x
  3. Step 3: Cross multiply
    87,021.76x = 130,250.22 × 46,985.08
  4. Step 4: Simplify right side
    87,021.76x = 6,119,817,006.72
  5. Step 5: Solve for x
    x = 6,119,817,006.72/87,021.76
  6. Step 6: Final answer
    x = 70,325.13

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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.