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Finding the Fourth Proportional to 249,013.92, 343,637.76 and 135,836.64

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Solution

The fourth proportional to 249,013.92, 343,637.76 and 135,836.64 is: 187,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,013.92 : 343,637.76 = 135,836.64 : x
  2. Step 2: Convert to fraction form
    249,013.92/343,637.76 = 135,836.64/x
  3. Step 3: Cross multiply
    249,013.92x = 343,637.76 × 135,836.64
  4. Step 4: Simplify right side
    249,013.92x = 46,678,598,695.53
  5. Step 5: Solve for x
    x = 46,678,598,695.53/249,013.92
  6. Step 6: Final answer
    x = 187,453.77

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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.