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Finding the Fourth Proportional to 113,690.88, 156,808.80 and 83,466.72

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Solution

The fourth proportional to 113,690.88, 156,808.80 and 83,466.72 is: 115,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,690.88 : 156,808.80 = 83,466.72 : x
  2. Step 2: Convert to fraction form
    113,690.88/156,808.80 = 83,466.72/x
  3. Step 3: Cross multiply
    113,690.88x = 156,808.80 × 83,466.72
  4. Step 4: Simplify right side
    113,690.88x = 13,088,316,203.14
  5. Step 5: Solve for x
    x = 13,088,316,203.14/113,690.88
  6. Step 6: Final answer
    x = 115,121.95

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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.