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Finding the Fourth Proportional to 249,558.78, 344,390.36 and 136,381.53

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Solution

The fourth proportional to 249,558.78, 344,390.36 and 136,381.53 is: 188,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,558.78 : 344,390.36 = 136,381.53 : x
  2. Step 2: Convert to fraction form
    249,558.78/344,390.36 = 136,381.53/x
  3. Step 3: Cross multiply
    249,558.78x = 344,390.36 × 136,381.53
  4. Step 4: Simplify right side
    249,558.78x = 46,968,483,532.14
  5. Step 5: Solve for x
    x = 46,968,483,532.14/249,558.78
  6. Step 6: Final answer
    x = 188,206.10

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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.