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Finding the Fourth Proportional to 402,938.60, 604,556.70 and 166,301.80

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Solution

The fourth proportional to 402,938.60, 604,556.70 and 166,301.80 is: 249,514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,938.60 : 604,556.70 = 166,301.80 : x
  2. Step 2: Convert to fraction form
    402,938.60/604,556.70 = 166,301.80/x
  3. Step 3: Cross multiply
    402,938.60x = 604,556.70 × 166,301.80
  4. Step 4: Simplify right side
    402,938.60x = 100,538,867,412.06
  5. Step 5: Solve for x
    x = 100,538,867,412.06/402,938.60
  6. Step 6: Final answer
    x = 249,514.11

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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.