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Finding the Fourth Proportional to 211,306.59, 291,601.44 and 115,813.08

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Solution

The fourth proportional to 211,306.59, 291,601.44 and 115,813.08 is: 159,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,306.59 : 291,601.44 = 115,813.08 : x
  2. Step 2: Convert to fraction form
    211,306.59/291,601.44 = 115,813.08/x
  3. Step 3: Cross multiply
    211,306.59x = 291,601.44 × 115,813.08
  4. Step 4: Simplify right side
    211,306.59x = 33,771,260,898.84
  5. Step 5: Solve for x
    x = 33,771,260,898.84/211,306.59
  6. Step 6: Final answer
    x = 159,821.14

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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.