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Finding the Fourth Proportional to 476,168.06, 657,130.86 and 261,315.80

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Solution

The fourth proportional to 476,168.06, 657,130.86 and 261,315.80 is: 360,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,168.06 : 657,130.86 = 261,315.80 : x
  2. Step 2: Convert to fraction form
    476,168.06/657,130.86 = 261,315.80/x
  3. Step 3: Cross multiply
    476,168.06x = 657,130.86 × 261,315.80
  4. Step 4: Simplify right side
    476,168.06x = 171,718,676,385.59
  5. Step 5: Solve for x
    x = 171,718,676,385.59/476,168.06
  6. Step 6: Final answer
    x = 360,626.20

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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.