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Finding the Fourth Proportional to 307,957.40, 461,736.30 and 130,416.20

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Solution

The fourth proportional to 307,957.40, 461,736.30 and 130,416.20 is: 195,539.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,957.40 : 461,736.30 = 130,416.20 : x
  2. Step 2: Convert to fraction form
    307,957.40/461,736.30 = 130,416.20/x
  3. Step 3: Cross multiply
    307,957.40x = 461,736.30 × 130,416.20
  4. Step 4: Simplify right side
    307,957.40x = 60,217,893,648.06
  5. Step 5: Solve for x
    x = 60,217,893,648.06/307,957.40
  6. Step 6: Final answer
    x = 195,539.69

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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.