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Finding the Fourth Proportional to 343,785.60, 474,416.76 and 190,814.88

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Solution

The fourth proportional to 343,785.60, 474,416.76 and 190,814.88 is: 263,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,785.60 : 474,416.76 = 190,814.88 : x
  2. Step 2: Convert to fraction form
    343,785.60/474,416.76 = 190,814.88/x
  3. Step 3: Cross multiply
    343,785.60x = 474,416.76 × 190,814.88
  4. Step 4: Simplify right side
    343,785.60x = 90,525,777,129.39
  5. Step 5: Solve for x
    x = 90,525,777,129.39/343,785.60
  6. Step 6: Final answer
    x = 263,320.44

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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.