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Finding the Fourth Proportional to 523,499.32, 785,240.34 and 129,515.32

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Solution

The fourth proportional to 523,499.32, 785,240.34 and 129,515.32 is: 194,270.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,499.32 : 785,240.34 = 129,515.32 : x
  2. Step 2: Convert to fraction form
    523,499.32/785,240.34 = 129,515.32/x
  3. Step 3: Cross multiply
    523,499.32x = 785,240.34 × 129,515.32
  4. Step 4: Simplify right side
    523,499.32x = 101,700,653,912.01
  5. Step 5: Solve for x
    x = 101,700,653,912.01/523,499.32
  6. Step 6: Final answer
    x = 194,270.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.