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Finding the Fourth Proportional to 154,368.76, 213,037.86 and 86,385.14

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Solution

The fourth proportional to 154,368.76, 213,037.86 and 86,385.14 is: 119,216.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,368.76 : 213,037.86 = 86,385.14 : x
  2. Step 2: Convert to fraction form
    154,368.76/213,037.86 = 86,385.14/x
  3. Step 3: Cross multiply
    154,368.76x = 213,037.86 × 86,385.14
  4. Step 4: Simplify right side
    154,368.76x = 18,403,305,361.40
  5. Step 5: Solve for x
    x = 18,403,305,361.40/154,368.76
  6. Step 6: Final answer
    x = 119,216.51

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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.