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Finding the Fourth Proportional to 185,388.40, 278,082.60 and 178,130.80

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Solution

The fourth proportional to 185,388.40, 278,082.60 and 178,130.80 is: 267,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,388.40 : 278,082.60 = 178,130.80 : x
  2. Step 2: Convert to fraction form
    185,388.40/278,082.60 = 178,130.80/x
  3. Step 3: Cross multiply
    185,388.40x = 278,082.60 × 178,130.80
  4. Step 4: Simplify right side
    185,388.40x = 49,535,076,004.08
  5. Step 5: Solve for x
    x = 49,535,076,004.08/185,388.40
  6. Step 6: Final answer
    x = 267,196.20

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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.