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Finding the Fourth Proportional to 113,167.36, 156,165.36 and 65,416.16

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Solution

The fourth proportional to 113,167.36, 156,165.36 and 65,416.16 is: 90,271.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,167.36 : 156,165.36 = 65,416.16 : x
  2. Step 2: Convert to fraction form
    113,167.36/156,165.36 = 65,416.16/x
  3. Step 3: Cross multiply
    113,167.36x = 156,165.36 × 65,416.16
  4. Step 4: Simplify right side
    113,167.36x = 10,215,738,176.22
  5. Step 5: Solve for x
    x = 10,215,738,176.22/113,167.36
  6. Step 6: Final answer
    x = 90,271.07

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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.