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Finding the Fourth Proportional to 236,347.61, 326,164.12 and 128,921.47

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Solution

The fourth proportional to 236,347.61, 326,164.12 and 128,921.47 is: 177,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,347.61 : 326,164.12 = 128,921.47 : x
  2. Step 2: Convert to fraction form
    236,347.61/326,164.12 = 128,921.47/x
  3. Step 3: Cross multiply
    236,347.61x = 326,164.12 × 128,921.47
  4. Step 4: Simplify right side
    236,347.61x = 42,049,556,673.94
  5. Step 5: Solve for x
    x = 42,049,556,673.94/236,347.61
  6. Step 6: Final answer
    x = 177,914.04

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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.