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Finding the Fourth Proportional to 118,459.53, 163,458.36 and 76,075.47

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Solution

The fourth proportional to 118,459.53, 163,458.36 and 76,075.47 is: 104,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,459.53 : 163,458.36 = 76,075.47 : x
  2. Step 2: Convert to fraction form
    118,459.53/163,458.36 = 76,075.47/x
  3. Step 3: Cross multiply
    118,459.53x = 163,458.36 × 76,075.47
  4. Step 4: Simplify right side
    118,459.53x = 12,435,171,562.43
  5. Step 5: Solve for x
    x = 12,435,171,562.43/118,459.53
  6. Step 6: Final answer
    x = 104,974.01

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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.