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Finding the Fourth Proportional to 474,665.93, 654,968.54 and 288,300.48

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Solution

The fourth proportional to 474,665.93, 654,968.54 and 288,300.48 is: 397,811.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,665.93 : 654,968.54 = 288,300.48 : x
  2. Step 2: Convert to fraction form
    474,665.93/654,968.54 = 288,300.48/x
  3. Step 3: Cross multiply
    474,665.93x = 654,968.54 × 288,300.48
  4. Step 4: Simplify right side
    474,665.93x = 188,827,742,731.52
  5. Step 5: Solve for x
    x = 188,827,742,731.52/474,665.93
  6. Step 6: Final answer
    x = 397,811.87

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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.