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Finding the Fourth Proportional to 98,745.10, 148,117.65 and 63,315.70

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Solution

The fourth proportional to 98,745.10, 148,117.65 and 63,315.70 is: 94,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,745.10 : 148,117.65 = 63,315.70 : x
  2. Step 2: Convert to fraction form
    98,745.10/148,117.65 = 63,315.70/x
  3. Step 3: Cross multiply
    98,745.10x = 148,117.65 × 63,315.70
  4. Step 4: Simplify right side
    98,745.10x = 9,378,172,692.11
  5. Step 5: Solve for x
    x = 9,378,172,692.11/98,745.10
  6. Step 6: Final answer
    x = 94,973.55

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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.