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Finding the Fourth Proportional to 194,775.84, 268,790.40 and 105,351.84

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Solution

The fourth proportional to 194,775.84, 268,790.40 and 105,351.84 is: 145,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,775.84 : 268,790.40 = 105,351.84 : x
  2. Step 2: Convert to fraction form
    194,775.84/268,790.40 = 105,351.84/x
  3. Step 3: Cross multiply
    194,775.84x = 268,790.40 × 105,351.84
  4. Step 4: Simplify right side
    194,775.84x = 28,317,563,214.34
  5. Step 5: Solve for x
    x = 28,317,563,214.34/194,775.84
  6. Step 6: Final answer
    x = 145,385.40

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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.