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Finding the Fourth Proportional to 93,782.56, 129,327.78 and 86,002.82

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Solution

The fourth proportional to 93,782.56, 129,327.78 and 86,002.82 is: 118,599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,782.56 : 129,327.78 = 86,002.82 : x
  2. Step 2: Convert to fraction form
    93,782.56/129,327.78 = 86,002.82/x
  3. Step 3: Cross multiply
    93,782.56x = 129,327.78 × 86,002.82
  4. Step 4: Simplify right side
    93,782.56x = 11,122,553,461.02
  5. Step 5: Solve for x
    x = 11,122,553,461.02/93,782.56
  6. Step 6: Final answer
    x = 118,599.39

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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.