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Finding the Fourth Proportional to 249,695.42, 374,580.43 and 91,911.87

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Solution

The fourth proportional to 249,695.42, 374,580.43 and 91,911.87 is: 137,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,695.42 : 374,580.43 = 91,911.87 : x
  2. Step 2: Convert to fraction form
    249,695.42/374,580.43 = 91,911.87/x
  3. Step 3: Cross multiply
    249,695.42x = 374,580.43 × 91,911.87
  4. Step 4: Simplify right side
    249,695.42x = 34,428,387,556.92
  5. Step 5: Solve for x
    x = 34,428,387,556.92/249,695.42
  6. Step 6: Final answer
    x = 137,881.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.