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Finding the Fourth Proportional to 293,027.40, 439,541.10 and 127,139.40

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Solution

The fourth proportional to 293,027.40, 439,541.10 and 127,139.40 is: 190,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,027.40 : 439,541.10 = 127,139.40 : x
  2. Step 2: Convert to fraction form
    293,027.40/439,541.10 = 127,139.40/x
  3. Step 3: Cross multiply
    293,027.40x = 439,541.10 × 127,139.40
  4. Step 4: Simplify right side
    293,027.40x = 55,882,991,729.34
  5. Step 5: Solve for x
    x = 55,882,991,729.34/293,027.40
  6. Step 6: Final answer
    x = 190,709.10

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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.