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Finding the Fourth Proportional to 288,615.60, 398,031.64 and 181,195.64

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Solution

The fourth proportional to 288,615.60, 398,031.64 and 181,195.64 is: 249,888.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,615.60 : 398,031.64 = 181,195.64 : x
  2. Step 2: Convert to fraction form
    288,615.60/398,031.64 = 181,195.64/x
  3. Step 3: Cross multiply
    288,615.60x = 398,031.64 × 181,195.64
  4. Step 4: Simplify right side
    288,615.60x = 72,121,597,750.05
  5. Step 5: Solve for x
    x = 72,121,597,750.05/288,615.60
  6. Step 6: Final answer
    x = 249,888.08

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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.