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Finding the Fourth Proportional to 343,764.64, 474,423.78 and 190,817.20

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Solution

The fourth proportional to 343,764.64, 474,423.78 and 190,817.20 is: 263,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,764.64 : 474,423.78 = 190,817.20 : x
  2. Step 2: Convert to fraction form
    343,764.64/474,423.78 = 190,817.20/x
  3. Step 3: Cross multiply
    343,764.64x = 474,423.78 × 190,817.20
  4. Step 4: Simplify right side
    343,764.64x = 90,528,217,313.02
  5. Step 5: Solve for x
    x = 90,528,217,313.02/343,764.64
  6. Step 6: Final answer
    x = 263,343.60

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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.