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Finding the Fourth Proportional to 624,169.38, 862,235.56 and 496,681.86

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Solution

The fourth proportional to 624,169.38, 862,235.56 and 496,681.86 is: 686,122.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,169.38 : 862,235.56 = 496,681.86 : x
  2. Step 2: Convert to fraction form
    624,169.38/862,235.56 = 496,681.86/x
  3. Step 3: Cross multiply
    624,169.38x = 862,235.56 × 496,681.86
  4. Step 4: Simplify right side
    624,169.38x = 428,256,761,698.94
  5. Step 5: Solve for x
    x = 428,256,761,698.94/624,169.38
  6. Step 6: Final answer
    x = 686,122.67

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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.