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Finding the Fourth Proportional to 113,435.58, 156,550.14 and 65,689.77

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Solution

The fourth proportional to 113,435.58, 156,550.14 and 65,689.77 is: 90,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,435.58 : 156,550.14 = 65,689.77 : x
  2. Step 2: Convert to fraction form
    113,435.58/156,550.14 = 65,689.77/x
  3. Step 3: Cross multiply
    113,435.58x = 156,550.14 × 65,689.77
  4. Step 4: Simplify right side
    113,435.58x = 10,283,742,690.07
  5. Step 5: Solve for x
    x = 10,283,742,690.07/113,435.58
  6. Step 6: Final answer
    x = 90,657.12

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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.