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Finding the Fourth Proportional to 249,071.72, 343,830.29 and 168,743.21

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Solution

The fourth proportional to 249,071.72, 343,830.29 and 168,743.21 is: 232,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,071.72 : 343,830.29 = 168,743.21 : x
  2. Step 2: Convert to fraction form
    249,071.72/343,830.29 = 168,743.21/x
  3. Step 3: Cross multiply
    249,071.72x = 343,830.29 × 168,743.21
  4. Step 4: Simplify right side
    249,071.72x = 58,019,024,266.96
  5. Step 5: Solve for x
    x = 58,019,024,266.96/249,071.72
  6. Step 6: Final answer
    x = 232,941.04

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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.