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Finding the Fourth Proportional to 76,166.88, 105,009.60 and 62,505.12

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Solution

The fourth proportional to 76,166.88, 105,009.60 and 62,505.12 is: 86,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,166.88 : 105,009.60 = 62,505.12 : x
  2. Step 2: Convert to fraction form
    76,166.88/105,009.60 = 62,505.12/x
  3. Step 3: Cross multiply
    76,166.88x = 105,009.60 × 62,505.12
  4. Step 4: Simplify right side
    76,166.88x = 6,563,637,649.15
  5. Step 5: Solve for x
    x = 6,563,637,649.15/76,166.88
  6. Step 6: Final answer
    x = 86,174.43

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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.