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Finding the Fourth Proportional to 105,925.62, 158,979.55 and 61,490.64

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Solution

The fourth proportional to 105,925.62, 158,979.55 and 61,490.64 is: 92,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,925.62 : 158,979.55 = 61,490.64 : x
  2. Step 2: Convert to fraction form
    105,925.62/158,979.55 = 61,490.64/x
  3. Step 3: Cross multiply
    105,925.62x = 158,979.55 × 61,490.64
  4. Step 4: Simplify right side
    105,925.62x = 9,775,754,276.41
  5. Step 5: Solve for x
    x = 9,775,754,276.41/105,925.62
  6. Step 6: Final answer
    x = 92,288.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.