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Finding the Fourth Proportional to 98,618.88, 147,935.88 and 28,498.80

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Solution

The fourth proportional to 98,618.88, 147,935.88 and 28,498.80 is: 42,750.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,618.88 : 147,935.88 = 28,498.80 : x
  2. Step 2: Convert to fraction form
    98,618.88/147,935.88 = 28,498.80/x
  3. Step 3: Cross multiply
    98,618.88x = 147,935.88 × 28,498.80
  4. Step 4: Simplify right side
    98,618.88x = 4,215,995,056.94
  5. Step 5: Solve for x
    x = 4,215,995,056.94/98,618.88
  6. Step 6: Final answer
    x = 42,750.38

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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.