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Finding the Fourth Proportional to 355,403.62, 533,133.48 and 118,747.12

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Solution

The fourth proportional to 355,403.62, 533,133.48 and 118,747.12 is: 178,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,403.62 : 533,133.48 = 118,747.12 : x
  2. Step 2: Convert to fraction form
    355,403.62/533,133.48 = 118,747.12/x
  3. Step 3: Cross multiply
    355,403.62x = 533,133.48 × 118,747.12
  4. Step 4: Simplify right side
    355,403.62x = 63,308,065,325.58
  5. Step 5: Solve for x
    x = 63,308,065,325.58/355,403.62
  6. Step 6: Final answer
    x = 178,130.05

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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.