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Finding the Fourth Proportional to 249,081.26, 343,697.42 and 141,639.38

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Solution

The fourth proportional to 249,081.26, 343,697.42 and 141,639.38 is: 195,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,081.26 : 343,697.42 = 141,639.38 : x
  2. Step 2: Convert to fraction form
    249,081.26/343,697.42 = 141,639.38/x
  3. Step 3: Cross multiply
    249,081.26x = 343,697.42 × 141,639.38
  4. Step 4: Simplify right side
    249,081.26x = 48,681,089,476.40
  5. Step 5: Solve for x
    x = 48,681,089,476.40/249,081.26
  6. Step 6: Final answer
    x = 195,442.60

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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.