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Finding the Fourth Proportional to 293,085.60, 439,628.40 and 193,358.40

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Solution

The fourth proportional to 293,085.60, 439,628.40 and 193,358.40 is: 290,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,085.60 : 439,628.40 = 193,358.40 : x
  2. Step 2: Convert to fraction form
    293,085.60/439,628.40 = 193,358.40/x
  3. Step 3: Cross multiply
    293,085.60x = 439,628.40 × 193,358.40
  4. Step 4: Simplify right side
    293,085.60x = 85,005,844,018.56
  5. Step 5: Solve for x
    x = 85,005,844,018.56/293,085.60
  6. Step 6: Final answer
    x = 290,037.60

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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.