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Finding the Fourth Proportional to 113,313.15, 170,024.40 and 79,961.40

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Solution

The fourth proportional to 113,313.15, 170,024.40 and 79,961.40 is: 119,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,313.15 : 170,024.40 = 79,961.40 : x
  2. Step 2: Convert to fraction form
    113,313.15/170,024.40 = 79,961.40/x
  3. Step 3: Cross multiply
    113,313.15x = 170,024.40 × 79,961.40
  4. Step 4: Simplify right side
    113,313.15x = 13,595,389,058.16
  5. Step 5: Solve for x
    x = 13,595,389,058.16/113,313.15
  6. Step 6: Final answer
    x = 119,980.68

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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.