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Finding the Fourth Proportional to 108,716.80, 163,075.20 and 52,583.80

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Solution

The fourth proportional to 108,716.80, 163,075.20 and 52,583.80 is: 78,875.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,716.80 : 163,075.20 = 52,583.80 : x
  2. Step 2: Convert to fraction form
    108,716.80/163,075.20 = 52,583.80/x
  3. Step 3: Cross multiply
    108,716.80x = 163,075.20 × 52,583.80
  4. Step 4: Simplify right side
    108,716.80x = 8,575,113,701.76
  5. Step 5: Solve for x
    x = 8,575,113,701.76/108,716.80
  6. Step 6: Final answer
    x = 78,875.70

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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.