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Finding the Fourth Proportional to 71,580.84, 98,774.34 and 41,790.12

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Solution

The fourth proportional to 71,580.84, 98,774.34 and 41,790.12 is: 57,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,580.84 : 98,774.34 = 41,790.12 : x
  2. Step 2: Convert to fraction form
    71,580.84/98,774.34 = 41,790.12/x
  3. Step 3: Cross multiply
    71,580.84x = 98,774.34 × 41,790.12
  4. Step 4: Simplify right side
    71,580.84x = 4,127,791,521.52
  5. Step 5: Solve for x
    x = 4,127,791,521.52/71,580.84
  6. Step 6: Final answer
    x = 57,666.15

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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.