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Finding the Fourth Proportional to 190,848.60, 286,272.90 and 66,189.60

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Solution

The fourth proportional to 190,848.60, 286,272.90 and 66,189.60 is: 99,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,848.60 : 286,272.90 = 66,189.60 : x
  2. Step 2: Convert to fraction form
    190,848.60/286,272.90 = 66,189.60/x
  3. Step 3: Cross multiply
    190,848.60x = 286,272.90 × 66,189.60
  4. Step 4: Simplify right side
    190,848.60x = 18,948,288,741.84
  5. Step 5: Solve for x
    x = 18,948,288,741.84/190,848.60
  6. Step 6: Final answer
    x = 99,284.40

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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.