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Finding the Fourth Proportional to 624,801.61, 862,289.87 and 450,515.18

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Solution

The fourth proportional to 624,801.61, 862,289.87 and 450,515.18 is: 621,756.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,801.61 : 862,289.87 = 450,515.18 : x
  2. Step 2: Convert to fraction form
    624,801.61/862,289.87 = 450,515.18/x
  3. Step 3: Cross multiply
    624,801.61x = 862,289.87 × 450,515.18
  4. Step 4: Simplify right side
    624,801.61x = 388,474,673,742.65
  5. Step 5: Solve for x
    x = 388,474,673,742.65/624,801.61
  6. Step 6: Final answer
    x = 621,756.84

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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.