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Finding the Fourth Proportional to 235,783.01, 353,461.23 and 85,988.21

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Solution

The fourth proportional to 235,783.01, 353,461.23 and 85,988.21 is: 128,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,783.01 : 353,461.23 = 85,988.21 : x
  2. Step 2: Convert to fraction form
    235,783.01/353,461.23 = 85,988.21/x
  3. Step 3: Cross multiply
    235,783.01x = 353,461.23 × 85,988.21
  4. Step 4: Simplify right side
    235,783.01x = 30,393,496,704.79
  5. Step 5: Solve for x
    x = 30,393,496,704.79/235,783.01
  6. Step 6: Final answer
    x = 128,904.52

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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.