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Finding the Fourth Proportional to 476,088.55, 656,980.21 and 261,223.27

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Solution

The fourth proportional to 476,088.55, 656,980.21 and 261,223.27 is: 360,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,088.55 : 656,980.21 = 261,223.27 : x
  2. Step 2: Convert to fraction form
    476,088.55/656,980.21 = 261,223.27/x
  3. Step 3: Cross multiply
    476,088.55x = 656,980.21 × 261,223.27
  4. Step 4: Simplify right side
    476,088.55x = 171,618,518,781.49
  5. Step 5: Solve for x
    x = 171,618,518,781.49/476,088.55
  6. Step 6: Final answer
    x = 360,476.05

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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.