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Finding the Fourth Proportional to 98,913.40, 148,341.30 and 54,561.40

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Solution

The fourth proportional to 98,913.40, 148,341.30 and 54,561.40 is: 81,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,913.40 : 148,341.30 = 54,561.40 : x
  2. Step 2: Convert to fraction form
    98,913.40/148,341.30 = 54,561.40/x
  3. Step 3: Cross multiply
    98,913.40x = 148,341.30 × 54,561.40
  4. Step 4: Simplify right side
    98,913.40x = 8,093,709,005.82
  5. Step 5: Solve for x
    x = 8,093,709,005.82/98,913.40
  6. Step 6: Final answer
    x = 81,826.21

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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.