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Finding the Fourth Proportional to 186,840.60, 280,090.80 and 68,483.40

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Solution

The fourth proportional to 186,840.60, 280,090.80 and 68,483.40 is: 102,662.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,840.60 : 280,090.80 = 68,483.40 : x
  2. Step 2: Convert to fraction form
    186,840.60/280,090.80 = 68,483.40/x
  3. Step 3: Cross multiply
    186,840.60x = 280,090.80 × 68,483.40
  4. Step 4: Simplify right side
    186,840.60x = 19,181,570,292.72
  5. Step 5: Solve for x
    x = 19,181,570,292.72/186,840.60
  6. Step 6: Final answer
    x = 102,662.75

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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.