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Finding the Fourth Proportional to 816,807.16, 1,224,410.82 and 457,153.64

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Solution

The fourth proportional to 816,807.16, 1,224,410.82 and 457,153.64 is: 685,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,807.16 : 1,224,410.82 = 457,153.64 : x
  2. Step 2: Convert to fraction form
    816,807.16/1,224,410.82 = 457,153.64/x
  3. Step 3: Cross multiply
    816,807.16x = 1,224,410.82 × 457,153.64
  4. Step 4: Simplify right side
    816,807.16x = 559,743,863,218.39
  5. Step 5: Solve for x
    x = 559,743,863,218.39/816,807.16
  6. Step 6: Final answer
    x = 685,282.76

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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.