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Finding the Fourth Proportional to 113,646.12, 156,832.20 and 65,927.58

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Solution

The fourth proportional to 113,646.12, 156,832.20 and 65,927.58 is: 90,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,646.12 : 156,832.20 = 65,927.58 : x
  2. Step 2: Convert to fraction form
    113,646.12/156,832.20 = 65,927.58/x
  3. Step 3: Cross multiply
    113,646.12x = 156,832.20 × 65,927.58
  4. Step 4: Simplify right side
    113,646.12x = 10,339,567,412.08
  5. Step 5: Solve for x
    x = 10,339,567,412.08/113,646.12
  6. Step 6: Final answer
    x = 90,980.38

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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.