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Finding the Fourth Proportional to 292,477.20, 438,715.80 and 273,231.60

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Solution

The fourth proportional to 292,477.20, 438,715.80 and 273,231.60 is: 409,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,477.20 : 438,715.80 = 273,231.60 : x
  2. Step 2: Convert to fraction form
    292,477.20/438,715.80 = 273,231.60/x
  3. Step 3: Cross multiply
    292,477.20x = 438,715.80 × 273,231.60
  4. Step 4: Simplify right side
    292,477.20x = 119,871,019,979.28
  5. Step 5: Solve for x
    x = 119,871,019,979.28/292,477.20
  6. Step 6: Final answer
    x = 409,847.40

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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.