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Finding the Fourth Proportional to 613,113.60, 919,186.56 and 258,182.40

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Solution

The fourth proportional to 613,113.60, 919,186.56 and 258,182.40 is: 387,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,113.60 : 919,186.56 = 258,182.40 : x
  2. Step 2: Convert to fraction form
    613,113.60/919,186.56 = 258,182.40/x
  3. Step 3: Cross multiply
    613,113.60x = 919,186.56 × 258,182.40
  4. Step 4: Simplify right side
    613,113.60x = 237,317,792,108.54
  5. Step 5: Solve for x
    x = 237,317,792,108.54/613,113.60
  6. Step 6: Final answer
    x = 387,069.85

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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.