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Finding the Fourth Proportional to 118,903.60, 178,204.20 and 48,703.60

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Solution

The fourth proportional to 118,903.60, 178,204.20 and 48,703.60 is: 72,993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,903.60 : 178,204.20 = 48,703.60 : x
  2. Step 2: Convert to fraction form
    118,903.60/178,204.20 = 48,703.60/x
  3. Step 3: Cross multiply
    118,903.60x = 178,204.20 × 48,703.60
  4. Step 4: Simplify right side
    118,903.60x = 8,679,186,075.12
  5. Step 5: Solve for x
    x = 8,679,186,075.12/118,903.60
  6. Step 6: Final answer
    x = 72,993.47

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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.