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Finding the Fourth Proportional to 613,116.60, 919,191.06 and 258,185.40

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Solution

The fourth proportional to 613,116.60, 919,191.06 and 258,185.40 is: 387,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,116.60 : 919,191.06 = 258,185.40 : x
  2. Step 2: Convert to fraction form
    613,116.60/919,191.06 = 258,185.40/x
  3. Step 3: Cross multiply
    613,116.60x = 919,191.06 × 258,185.40
  4. Step 4: Simplify right side
    613,116.60x = 237,321,711,502.52
  5. Step 5: Solve for x
    x = 237,321,711,502.52/613,116.60
  6. Step 6: Final answer
    x = 387,074.35

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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.