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Finding the Fourth Proportional to 388,173.95, 535,667.48 and 216,086.29

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Solution

The fourth proportional to 388,173.95, 535,667.48 and 216,086.29 is: 298,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,173.95 : 535,667.48 = 216,086.29 : x
  2. Step 2: Convert to fraction form
    388,173.95/535,667.48 = 216,086.29/x
  3. Step 3: Cross multiply
    388,173.95x = 535,667.48 × 216,086.29
  4. Step 4: Simplify right side
    388,173.95x = 115,750,396,007.25
  5. Step 5: Solve for x
    x = 115,750,396,007.25/388,173.95
  6. Step 6: Final answer
    x = 298,192.08

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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.