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Finding the Fourth Proportional to 85,980.84, 118,664.45 and 48,255.09

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Solution

The fourth proportional to 85,980.84, 118,664.45 and 48,255.09 is: 66,598.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,980.84 : 118,664.45 = 48,255.09 : x
  2. Step 2: Convert to fraction form
    85,980.84/118,664.45 = 48,255.09/x
  3. Step 3: Cross multiply
    85,980.84x = 118,664.45 × 48,255.09
  4. Step 4: Simplify right side
    85,980.84x = 5,726,163,714.55
  5. Step 5: Solve for x
    x = 5,726,163,714.55/85,980.84
  6. Step 6: Final answer
    x = 66,598.14

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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.