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Finding the Fourth Proportional to 92,830.14, 128,108.46 and 54,582.78

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Solution

The fourth proportional to 92,830.14, 128,108.46 and 54,582.78 is: 75,325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,830.14 : 128,108.46 = 54,582.78 : x
  2. Step 2: Convert to fraction form
    92,830.14/128,108.46 = 54,582.78/x
  3. Step 3: Cross multiply
    92,830.14x = 128,108.46 × 54,582.78
  4. Step 4: Simplify right side
    92,830.14x = 6,992,515,888.32
  5. Step 5: Solve for x
    x = 6,992,515,888.32/92,830.14
  6. Step 6: Final answer
    x = 75,325.92

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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.