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Finding the Fourth Proportional to 64,814.76, 89,604.90 and 64,224.36

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Solution

The fourth proportional to 64,814.76, 89,604.90 and 64,224.36 is: 88,788.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,814.76 : 89,604.90 = 64,224.36 : x
  2. Step 2: Convert to fraction form
    64,814.76/89,604.90 = 64,224.36/x
  3. Step 3: Cross multiply
    64,814.76x = 89,604.90 × 64,224.36
  4. Step 4: Simplify right side
    64,814.76x = 5,754,817,355.36
  5. Step 5: Solve for x
    x = 5,754,817,355.36/64,814.76
  6. Step 6: Final answer
    x = 88,788.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.