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Finding the Fourth Proportional to 267,980.55, 401,445.34 and 155,424.32

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Solution

The fourth proportional to 267,980.55, 401,445.34 and 155,424.32 is: 232,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,980.55 : 401,445.34 = 155,424.32 : x
  2. Step 2: Convert to fraction form
    267,980.55/401,445.34 = 155,424.32/x
  3. Step 3: Cross multiply
    267,980.55x = 401,445.34 × 155,424.32
  4. Step 4: Simplify right side
    267,980.55x = 62,394,368,533.43
  5. Step 5: Solve for x
    x = 62,394,368,533.43/267,980.55
  6. Step 6: Final answer
    x = 232,831.70

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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.