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Finding the Fourth Proportional to 104,115.84, 143,681.60 and 63,813.76

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Solution

The fourth proportional to 104,115.84, 143,681.60 and 63,813.76 is: 88,064.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,115.84 : 143,681.60 = 63,813.76 : x
  2. Step 2: Convert to fraction form
    104,115.84/143,681.60 = 63,813.76/x
  3. Step 3: Cross multiply
    104,115.84x = 143,681.60 × 63,813.76
  4. Step 4: Simplify right side
    104,115.84x = 9,168,863,138.82
  5. Step 5: Solve for x
    x = 9,168,863,138.82/104,115.84
  6. Step 6: Final answer
    x = 88,064.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.