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Finding the Fourth Proportional to 92,913.63, 128,221.14 and 54,674.65

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Solution

The fourth proportional to 92,913.63, 128,221.14 and 54,674.65 is: 75,451.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,913.63 : 128,221.14 = 54,674.65 : x
  2. Step 2: Convert to fraction form
    92,913.63/128,221.14 = 54,674.65/x
  3. Step 3: Cross multiply
    92,913.63x = 128,221.14 × 54,674.65
  4. Step 4: Simplify right side
    92,913.63x = 7,010,445,952.10
  5. Step 5: Solve for x
    x = 7,010,445,952.10/92,913.63
  6. Step 6: Final answer
    x = 75,451.21

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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.