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Finding the Fourth Proportional to 312,218.01, 430,862.04 and 168,978.02

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Solution

The fourth proportional to 312,218.01, 430,862.04 and 168,978.02 is: 233,190.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,218.01 : 430,862.04 = 168,978.02 : x
  2. Step 2: Convert to fraction form
    312,218.01/430,862.04 = 168,978.02/x
  3. Step 3: Cross multiply
    312,218.01x = 430,862.04 × 168,978.02
  4. Step 4: Simplify right side
    312,218.01x = 72,806,212,258.05
  5. Step 5: Solve for x
    x = 72,806,212,258.05/312,218.01
  6. Step 6: Final answer
    x = 233,190.30

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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.