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Finding the Fourth Proportional to 78,194.56, 117,290.16 and 19,030.56

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Solution

The fourth proportional to 78,194.56, 117,290.16 and 19,030.56 is: 28,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,194.56 : 117,290.16 = 19,030.56 : x
  2. Step 2: Convert to fraction form
    78,194.56/117,290.16 = 19,030.56/x
  3. Step 3: Cross multiply
    78,194.56x = 117,290.16 × 19,030.56
  4. Step 4: Simplify right side
    78,194.56x = 2,232,097,427.29
  5. Step 5: Solve for x
    x = 2,232,097,427.29/78,194.56
  6. Step 6: Final answer
    x = 28,545.43

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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.