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Finding the Fourth Proportional to 249,691.35, 374,574.32 and 91,907.81

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Solution

The fourth proportional to 249,691.35, 374,574.32 and 91,907.81 is: 137,875.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,691.35 : 374,574.32 = 91,907.81 : x
  2. Step 2: Convert to fraction form
    249,691.35/374,574.32 = 91,907.81/x
  3. Step 3: Cross multiply
    249,691.35x = 374,574.32 × 91,907.81
  4. Step 4: Simplify right side
    249,691.35x = 34,426,305,433.44
  5. Step 5: Solve for x
    x = 34,426,305,433.44/249,691.35
  6. Step 6: Final answer
    x = 137,875.44

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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.