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Finding the Fourth Proportional to 113,856.40, 170,784.60 and 76,531.60

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Solution

The fourth proportional to 113,856.40, 170,784.60 and 76,531.60 is: 114,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,856.40 : 170,784.60 = 76,531.60 : x
  2. Step 2: Convert to fraction form
    113,856.40/170,784.60 = 76,531.60/x
  3. Step 3: Cross multiply
    113,856.40x = 170,784.60 × 76,531.60
  4. Step 4: Simplify right side
    113,856.40x = 13,070,418,693.36
  5. Step 5: Solve for x
    x = 13,070,418,693.36/113,856.40
  6. Step 6: Final answer
    x = 114,797.40

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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.