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Finding the Fourth Proportional to 92,810.16, 128,032.92 and 55,057.68

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Solution

The fourth proportional to 92,810.16, 128,032.92 and 55,057.68 is: 75,952.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,810.16 : 128,032.92 = 55,057.68 : x
  2. Step 2: Convert to fraction form
    92,810.16/128,032.92 = 55,057.68/x
  3. Step 3: Cross multiply
    92,810.16x = 128,032.92 × 55,057.68
  4. Step 4: Simplify right side
    92,810.16x = 7,049,195,538.83
  5. Step 5: Solve for x
    x = 7,049,195,538.83/92,810.16
  6. Step 6: Final answer
    x = 75,952.84

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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.