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Finding the Fourth Proportional to 468,076.92, 645,945.57 and 253,216.50

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Solution

The fourth proportional to 468,076.92, 645,945.57 and 253,216.50 is: 349,438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,076.92 : 645,945.57 = 253,216.50 : x
  2. Step 2: Convert to fraction form
    468,076.92/645,945.57 = 253,216.50/x
  3. Step 3: Cross multiply
    468,076.92x = 645,945.57 × 253,216.50
  4. Step 4: Simplify right side
    468,076.92x = 163,564,076,425.91
  5. Step 5: Solve for x
    x = 163,564,076,425.91/468,076.92
  6. Step 6: Final answer
    x = 349,438.46

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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.