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Finding the Fourth Proportional to 98,000.10, 146,672.10 and 86,190.30

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Solution

The fourth proportional to 98,000.10, 146,672.10 and 86,190.30 is: 128,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,000.10 : 146,672.10 = 86,190.30 : x
  2. Step 2: Convert to fraction form
    98,000.10/146,672.10 = 86,190.30/x
  3. Step 3: Cross multiply
    98,000.10x = 146,672.10 × 86,190.30
  4. Step 4: Simplify right side
    98,000.10x = 12,641,712,300.63
  5. Step 5: Solve for x
    x = 12,641,712,300.63/98,000.10
  6. Step 6: Final answer
    x = 128,996.93

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1.5x scale

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.