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Finding the Fourth Proportional to 407,818.60, 611,946.60 and 171,185.20

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Solution

The fourth proportional to 407,818.60, 611,946.60 and 171,185.20 is: 256,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,818.60 : 611,946.60 = 171,185.20 : x
  2. Step 2: Convert to fraction form
    407,818.60/611,946.60 = 171,185.20/x
  3. Step 3: Cross multiply
    407,818.60x = 611,946.60 × 171,185.20
  4. Step 4: Simplify right side
    407,818.60x = 104,756,201,110.32
  5. Step 5: Solve for x
    x = 104,756,201,110.32/407,818.60
  6. Step 6: Final answer
    x = 256,869.60

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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.