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Finding the Fourth Proportional to 481,412.15, 664,386.16 and 266,572.20

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Solution

The fourth proportional to 481,412.15, 664,386.16 and 266,572.20 is: 367,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,412.15 : 664,386.16 = 266,572.20 : x
  2. Step 2: Convert to fraction form
    481,412.15/664,386.16 = 266,572.20/x
  3. Step 3: Cross multiply
    481,412.15x = 664,386.16 × 266,572.20
  4. Step 4: Simplify right side
    481,412.15x = 177,106,880,320.75
  5. Step 5: Solve for x
    x = 177,106,880,320.75/481,412.15
  6. Step 6: Final answer
    x = 367,890.34

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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.