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Finding the Fourth Proportional to 249,518.16, 344,336.16 and 136,343.28

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Solution

The fourth proportional to 249,518.16, 344,336.16 and 136,343.28 is: 188,154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,518.16 : 344,336.16 = 136,343.28 : x
  2. Step 2: Convert to fraction form
    249,518.16/344,336.16 = 136,343.28/x
  3. Step 3: Cross multiply
    249,518.16x = 344,336.16 × 136,343.28
  4. Step 4: Simplify right side
    249,518.16x = 46,947,921,477.00
  5. Step 5: Solve for x
    x = 46,947,921,477.00/249,518.16
  6. Step 6: Final answer
    x = 188,154.33

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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.