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Finding the Fourth Proportional to 98,396.88, 147,695.76 and 72,023.28

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Solution

The fourth proportional to 98,396.88, 147,695.76 and 72,023.28 is: 108,108.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,396.88 : 147,695.76 = 72,023.28 : x
  2. Step 2: Convert to fraction form
    98,396.88/147,695.76 = 72,023.28/x
  3. Step 3: Cross multiply
    98,396.88x = 147,695.76 × 72,023.28
  4. Step 4: Simplify right side
    98,396.88x = 10,637,533,077.29
  5. Step 5: Solve for x
    x = 10,637,533,077.29/98,396.88
  6. Step 6: Final answer
    x = 108,108.44

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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.