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Finding the Fourth Proportional to 81,798.60, 112,937.99 and 62,644.53

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Solution

The fourth proportional to 81,798.60, 112,937.99 and 62,644.53 is: 86,492.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,798.60 : 112,937.99 = 62,644.53 : x
  2. Step 2: Convert to fraction form
    81,798.60/112,937.99 = 62,644.53/x
  3. Step 3: Cross multiply
    81,798.60x = 112,937.99 × 62,644.53
  4. Step 4: Simplify right side
    81,798.60x = 7,074,946,989.47
  5. Step 5: Solve for x
    x = 7,074,946,989.47/81,798.60
  6. Step 6: Final answer
    x = 86,492.27

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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.