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Finding the Fourth Proportional to 352,959.81, 487,045.76 and 199,986.45

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Solution

The fourth proportional to 352,959.81, 487,045.76 and 199,986.45 is: 275,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,959.81 : 487,045.76 = 199,986.45 : x
  2. Step 2: Convert to fraction form
    352,959.81/487,045.76 = 199,986.45/x
  3. Step 3: Cross multiply
    352,959.81x = 487,045.76 × 199,986.45
  4. Step 4: Simplify right side
    352,959.81x = 97,402,551,530.02
  5. Step 5: Solve for x
    x = 97,402,551,530.02/352,959.81
  6. Step 6: Final answer
    x = 275,959.33

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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.