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Finding the Fourth Proportional to 291,219.28, 436,828.60 and 91,557.12

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Solution

The fourth proportional to 291,219.28, 436,828.60 and 91,557.12 is: 137,335.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,219.28 : 436,828.60 = 91,557.12 : x
  2. Step 2: Convert to fraction form
    291,219.28/436,828.60 = 91,557.12/x
  3. Step 3: Cross multiply
    291,219.28x = 436,828.60 × 91,557.12
  4. Step 4: Simplify right side
    291,219.28x = 39,994,768,549.63
  5. Step 5: Solve for x
    x = 39,994,768,549.63/291,219.28
  6. Step 6: Final answer
    x = 137,335.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.