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Finding the Fourth Proportional to 92,853.83, 128,258.48 and 76,786.04

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Solution

The fourth proportional to 92,853.83, 128,258.48 and 76,786.04 is: 106,064.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,853.83 : 128,258.48 = 76,786.04 : x
  2. Step 2: Convert to fraction form
    92,853.83/128,258.48 = 76,786.04/x
  3. Step 3: Cross multiply
    92,853.83x = 128,258.48 × 76,786.04
  4. Step 4: Simplify right side
    92,853.83x = 9,848,461,288.23
  5. Step 5: Solve for x
    x = 9,848,461,288.23/92,853.83
  6. Step 6: Final answer
    x = 106,064.13

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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.