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Finding the Fourth Proportional to 86,564.40, 129,846.60 and 62,944.80

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Solution

The fourth proportional to 86,564.40, 129,846.60 and 62,944.80 is: 94,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,564.40 : 129,846.60 = 62,944.80 : x
  2. Step 2: Convert to fraction form
    86,564.40/129,846.60 = 62,944.80/x
  3. Step 3: Cross multiply
    86,564.40x = 129,846.60 × 62,944.80
  4. Step 4: Simplify right side
    86,564.40x = 8,173,168,267.68
  5. Step 5: Solve for x
    x = 8,173,168,267.68/86,564.40
  6. Step 6: Final answer
    x = 94,417.20

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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.