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Finding the Fourth Proportional to 118,075.20, 165,655.20 and 118,075.20

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Solution

The fourth proportional to 118,075.20, 165,655.20 and 118,075.20 is: 165,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,075.20 : 165,655.20 = 118,075.20 : x
  2. Step 2: Convert to fraction form
    118,075.20/165,655.20 = 118,075.20/x
  3. Step 3: Cross multiply
    118,075.20x = 165,655.20 × 118,075.20
  4. Step 4: Simplify right side
    118,075.20x = 19,559,770,871.04
  5. Step 5: Solve for x
    x = 19,559,770,871.04/118,075.20
  6. Step 6: Final answer
    x = 165,655.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.