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Finding the Fourth Proportional to 71,085.61, 98,097.78 and 39,254.50

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Solution

The fourth proportional to 71,085.61, 98,097.78 and 39,254.50 is: 54,171.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,085.61 : 98,097.78 = 39,254.50 : x
  2. Step 2: Convert to fraction form
    71,085.61/98,097.78 = 39,254.50/x
  3. Step 3: Cross multiply
    71,085.61x = 98,097.78 × 39,254.50
  4. Step 4: Simplify right side
    71,085.61x = 3,850,779,305.01
  5. Step 5: Solve for x
    x = 3,850,779,305.01/71,085.61
  6. Step 6: Final answer
    x = 54,171.01

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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.