Home / 71,528.09-98,706.89-39,696.17

Finding the Fourth Proportional to 71,528.09, 98,706.89 and 39,696.17

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Solution

The fourth proportional to 71,528.09, 98,706.89 and 39,696.17 is: 54,779.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,528.09 : 98,706.89 = 39,696.17 : x
  2. Step 2: Convert to fraction form
    71,528.09/98,706.89 = 39,696.17/x
  3. Step 3: Cross multiply
    71,528.09x = 98,706.89 × 39,696.17
  4. Step 4: Simplify right side
    71,528.09x = 3,918,285,287.13
  5. Step 5: Solve for x
    x = 3,918,285,287.13/71,528.09
  6. Step 6: Final answer
    x = 54,779.67

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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.