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Finding the Fourth Proportional to 620,087.60, 930,131.40 and 170,877.80

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Solution

The fourth proportional to 620,087.60, 930,131.40 and 170,877.80 is: 256,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,087.60 : 930,131.40 = 170,877.80 : x
  2. Step 2: Convert to fraction form
    620,087.60/930,131.40 = 170,877.80/x
  3. Step 3: Cross multiply
    620,087.60x = 930,131.40 × 170,877.80
  4. Step 4: Simplify right side
    620,087.60x = 158,938,807,342.92
  5. Step 5: Solve for x
    x = 158,938,807,342.92/620,087.60
  6. Step 6: Final answer
    x = 256,316.70

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Similar ratio
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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.