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Finding the Fourth Proportional to 312,215.40, 468,509.96 and 134,722.44

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Solution

The fourth proportional to 312,215.40, 468,509.96 and 134,722.44 is: 202,164.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,215.40 : 468,509.96 = 134,722.44 : x
  2. Step 2: Convert to fraction form
    312,215.40/468,509.96 = 134,722.44/x
  3. Step 3: Cross multiply
    312,215.40x = 468,509.96 × 134,722.44
  4. Step 4: Simplify right side
    312,215.40x = 63,118,804,301.89
  5. Step 5: Solve for x
    x = 63,118,804,301.89/312,215.40
  6. Step 6: Final answer
    x = 202,164.29

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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.