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Finding the Fourth Proportional to 372,938.40, 559,407.60 and 335,613.60

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Solution

The fourth proportional to 372,938.40, 559,407.60 and 335,613.60 is: 503,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,938.40 : 559,407.60 = 335,613.60 : x
  2. Step 2: Convert to fraction form
    372,938.40/559,407.60 = 335,613.60/x
  3. Step 3: Cross multiply
    372,938.40x = 559,407.60 × 335,613.60
  4. Step 4: Simplify right side
    372,938.40x = 187,744,798,503.36
  5. Step 5: Solve for x
    x = 187,744,798,503.36/372,938.40
  6. Step 6: Final answer
    x = 503,420.40

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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.