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Finding the Fourth Proportional to 316,783.92, 437,148.84 and 189,384.24

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Solution

The fourth proportional to 316,783.92, 437,148.84 and 189,384.24 is: 261,342.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,783.92 : 437,148.84 = 189,384.24 : x
  2. Step 2: Convert to fraction form
    316,783.92/437,148.84 = 189,384.24/x
  3. Step 3: Cross multiply
    316,783.92x = 437,148.84 × 189,384.24
  4. Step 4: Simplify right side
    316,783.92x = 82,789,100,830.28
  5. Step 5: Solve for x
    x = 82,789,100,830.28/316,783.92
  6. Step 6: Final answer
    x = 261,342.50

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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.