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Finding the Fourth Proportional to 680,062.14, 938,485.74 and 374,131.94

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Solution

The fourth proportional to 680,062.14, 938,485.74 and 374,131.94 is: 516,302.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,062.14 : 938,485.74 = 374,131.94 : x
  2. Step 2: Convert to fraction form
    680,062.14/938,485.74 = 374,131.94/x
  3. Step 3: Cross multiply
    680,062.14x = 938,485.74 × 374,131.94
  4. Step 4: Simplify right side
    680,062.14x = 351,117,492,914.75
  5. Step 5: Solve for x
    x = 351,117,492,914.75/680,062.14
  6. Step 6: Final answer
    x = 516,302.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.