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Finding the Fourth Proportional to 645,712.47, 968,233.59 and 190,244.59

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Solution

The fourth proportional to 645,712.47, 968,233.59 and 190,244.59 is: 285,268.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,712.47 : 968,233.59 = 190,244.59 : x
  2. Step 2: Convert to fraction form
    645,712.47/968,233.59 = 190,244.59/x
  3. Step 3: Cross multiply
    645,712.47x = 968,233.59 × 190,244.59
  4. Step 4: Simplify right side
    645,712.47x = 184,201,202,353.78
  5. Step 5: Solve for x
    x = 184,201,202,353.78/645,712.47
  6. Step 6: Final answer
    x = 285,268.15

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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.