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Finding the Fourth Proportional to 92,798.94, 128,061.18 and 54,562.80

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Solution

The fourth proportional to 92,798.94, 128,061.18 and 54,562.80 is: 75,295.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,798.94 : 128,061.18 = 54,562.80 : x
  2. Step 2: Convert to fraction form
    92,798.94/128,061.18 = 54,562.80/x
  3. Step 3: Cross multiply
    92,798.94x = 128,061.18 × 54,562.80
  4. Step 4: Simplify right side
    92,798.94x = 6,987,376,552.10
  5. Step 5: Solve for x
    x = 6,987,376,552.10/92,798.94
  6. Step 6: Final answer
    x = 75,295.87

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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.