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Finding the Fourth Proportional to 113,565.48, 156,714.60 and 65,834.40

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Solution

The fourth proportional to 113,565.48, 156,714.60 and 65,834.40 is: 90,848.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,565.48 : 156,714.60 = 65,834.40 : x
  2. Step 2: Convert to fraction form
    113,565.48/156,714.60 = 65,834.40/x
  3. Step 3: Cross multiply
    113,565.48x = 156,714.60 × 65,834.40
  4. Step 4: Simplify right side
    113,565.48x = 10,317,211,662.24
  5. Step 5: Solve for x
    x = 10,317,211,662.24/113,565.48
  6. Step 6: Final answer
    x = 90,848.13

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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.