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Finding the Fourth Proportional to 518,556.17, 715,353.14 and 346,516.37

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Solution

The fourth proportional to 518,556.17, 715,353.14 and 346,516.37 is: 478,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,556.17 : 715,353.14 = 346,516.37 : x
  2. Step 2: Convert to fraction form
    518,556.17/715,353.14 = 346,516.37/x
  3. Step 3: Cross multiply
    518,556.17x = 715,353.14 × 346,516.37
  4. Step 4: Simplify right side
    518,556.17x = 247,881,568,031.55
  5. Step 5: Solve for x
    x = 247,881,568,031.55/518,556.17
  6. Step 6: Final answer
    x = 478,022.60

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1.5x scale

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.