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Finding the Fourth Proportional to 189,885.93, 262,037.39 and 105,000.09

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Solution

The fourth proportional to 189,885.93, 262,037.39 and 105,000.09 is: 144,897.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,885.93 : 262,037.39 = 105,000.09 : x
  2. Step 2: Convert to fraction form
    189,885.93/262,037.39 = 105,000.09/x
  3. Step 3: Cross multiply
    189,885.93x = 262,037.39 × 105,000.09
  4. Step 4: Simplify right side
    189,885.93x = 27,513,948,223.18
  5. Step 5: Solve for x
    x = 27,513,948,223.18/189,885.93
  6. Step 6: Final answer
    x = 144,897.25

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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.