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Finding the Fourth Proportional to 312,718.17, 469,077.26 and 76,061.01

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Solution

The fourth proportional to 312,718.17, 469,077.26 and 76,061.01 is: 114,091.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,718.17 : 469,077.26 = 76,061.01 : x
  2. Step 2: Convert to fraction form
    312,718.17/469,077.26 = 76,061.01/x
  3. Step 3: Cross multiply
    312,718.17x = 469,077.26 × 76,061.01
  4. Step 4: Simplify right side
    312,718.17x = 35,678,489,783.33
  5. Step 5: Solve for x
    x = 35,678,489,783.33/312,718.17
  6. Step 6: Final answer
    x = 114,091.52

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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.