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Finding the Fourth Proportional to 364,642.85, 547,208.90 and 127,986.23

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Solution

The fourth proportional to 364,642.85, 547,208.90 and 127,986.23 is: 192,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,642.85 : 547,208.90 = 127,986.23 : x
  2. Step 2: Convert to fraction form
    364,642.85/547,208.90 = 127,986.23/x
  3. Step 3: Cross multiply
    364,642.85x = 547,208.90 × 127,986.23
  4. Step 4: Simplify right side
    364,642.85x = 70,035,205,341.49
  5. Step 5: Solve for x
    x = 70,035,205,341.49/364,642.85
  6. Step 6: Final answer
    x = 192,065.21

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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.