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Finding the Fourth Proportional to 368,656.92, 553,332.06 and 191,289.60

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Solution

The fourth proportional to 368,656.92, 553,332.06 and 191,289.60 is: 287,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,656.92 : 553,332.06 = 191,289.60 : x
  2. Step 2: Convert to fraction form
    368,656.92/553,332.06 = 191,289.60/x
  3. Step 3: Cross multiply
    368,656.92x = 553,332.06 × 191,289.60
  4. Step 4: Simplify right side
    368,656.92x = 105,846,668,424.58
  5. Step 5: Solve for x
    x = 105,846,668,424.58/368,656.92
  6. Step 6: Final answer
    x = 287,114.29

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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.