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Finding the Fourth Proportional to 118,187.10, 177,256.80 and 43,281.67

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Solution

The fourth proportional to 118,187.10, 177,256.80 and 43,281.67 is: 64,913.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,187.10 : 177,256.80 = 43,281.67 : x
  2. Step 2: Convert to fraction form
    118,187.10/177,256.80 = 43,281.67/x
  3. Step 3: Cross multiply
    118,187.10x = 177,256.80 × 43,281.67
  4. Step 4: Simplify right side
    118,187.10x = 7,671,970,322.86
  5. Step 5: Solve for x
    x = 7,671,970,322.86/118,187.10
  6. Step 6: Final answer
    x = 64,913.77

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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.