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Finding the Fourth Proportional to 171,698.60, 256,818.90 and 154,056.80

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Solution

The fourth proportional to 171,698.60, 256,818.90 and 154,056.80 is: 230,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,698.60 : 256,818.90 = 154,056.80 : x
  2. Step 2: Convert to fraction form
    171,698.60/256,818.90 = 154,056.80/x
  3. Step 3: Cross multiply
    171,698.60x = 256,818.90 × 154,056.80
  4. Step 4: Simplify right side
    171,698.60x = 39,564,697,913.52
  5. Step 5: Solve for x
    x = 39,564,697,913.52/171,698.60
  6. Step 6: Final answer
    x = 230,431.10

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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.