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Finding the Fourth Proportional to 472,868.80, 709,303.20 and 367,115.20

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Solution

The fourth proportional to 472,868.80, 709,303.20 and 367,115.20 is: 550,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,868.80 : 709,303.20 = 367,115.20 : x
  2. Step 2: Convert to fraction form
    472,868.80/709,303.20 = 367,115.20/x
  3. Step 3: Cross multiply
    472,868.80x = 709,303.20 × 367,115.20
  4. Step 4: Simplify right side
    472,868.80x = 260,395,986,128.64
  5. Step 5: Solve for x
    x = 260,395,986,128.64/472,868.80
  6. Step 6: Final answer
    x = 550,672.80

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Similar ratio
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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.