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Finding the Fourth Proportional to 113,486.16, 156,587.08 and 65,736.64

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Solution

The fourth proportional to 113,486.16, 156,587.08 and 65,736.64 is: 90,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486.16 : 156,587.08 = 65,736.64 : x
  2. Step 2: Convert to fraction form
    113,486.16/156,587.08 = 65,736.64/x
  3. Step 3: Cross multiply
    113,486.16x = 156,587.08 × 65,736.64
  4. Step 4: Simplify right side
    113,486.16x = 10,293,508,506.61
  5. Step 5: Solve for x
    x = 10,293,508,506.61/113,486.16
  6. Step 6: Final answer
    x = 90,702.77

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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.