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Finding the Fourth Proportional to 6,848.94, 9,490.62 and 6,432.78

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Solution

The fourth proportional to 6,848.94, 9,490.62 and 6,432.78 is: 8,913.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,848.94 : 9,490.62 = 6,432.78 : x
  2. Step 2: Convert to fraction form
    6,848.94/9,490.62 = 6,432.78/x
  3. Step 3: Cross multiply
    6,848.94x = 9,490.62 × 6,432.78
  4. Step 4: Simplify right side
    6,848.94x = 61,051,070.52
  5. Step 5: Solve for x
    x = 61,051,070.52/6,848.94
  6. Step 6: Final answer
    x = 8,913.94

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.