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Finding the Fourth Proportional to 92,838.48, 128,098.44 and 57,034.32

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Solution

The fourth proportional to 92,838.48, 128,098.44 and 57,034.32 is: 78,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,838.48 : 128,098.44 = 57,034.32 : x
  2. Step 2: Convert to fraction form
    92,838.48/128,098.44 = 57,034.32/x
  3. Step 3: Cross multiply
    92,838.48x = 128,098.44 × 57,034.32
  4. Step 4: Simplify right side
    92,838.48x = 7,306,007,418.46
  5. Step 5: Solve for x
    x = 7,306,007,418.46/92,838.48
  6. Step 6: Final answer
    x = 78,695.90

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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.