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Finding the Fourth Proportional to 265,887.45, 366,925.83 and 145,031.34

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Solution

The fourth proportional to 265,887.45, 366,925.83 and 145,031.34 is: 200,143.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,887.45 : 366,925.83 = 145,031.34 : x
  2. Step 2: Convert to fraction form
    265,887.45/366,925.83 = 145,031.34/x
  3. Step 3: Cross multiply
    265,887.45x = 366,925.83 × 145,031.34
  4. Step 4: Simplify right side
    265,887.45x = 53,215,742,970.88
  5. Step 5: Solve for x
    x = 53,215,742,970.88/265,887.45
  6. Step 6: Final answer
    x = 200,143.87

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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.