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Finding the Fourth Proportional to 143,671.18, 215,506.36 and 64,692.94

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Solution

The fourth proportional to 143,671.18, 215,506.36 and 64,692.94 is: 97,039.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,671.18 : 215,506.36 = 64,692.94 : x
  2. Step 2: Convert to fraction form
    143,671.18/215,506.36 = 64,692.94/x
  3. Step 3: Cross multiply
    143,671.18x = 215,506.36 × 64,692.94
  4. Step 4: Simplify right side
    143,671.18x = 13,941,740,017.10
  5. Step 5: Solve for x
    x = 13,941,740,017.10/143,671.18
  6. Step 6: Final answer
    x = 97,039.23

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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.