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Finding the Fourth Proportional to 118,505.34, 163,539.95 and 70,749.77

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Solution

The fourth proportional to 118,505.34, 163,539.95 and 70,749.77 is: 97,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,505.34 : 163,539.95 = 70,749.77 : x
  2. Step 2: Convert to fraction form
    118,505.34/163,539.95 = 70,749.77/x
  3. Step 3: Cross multiply
    118,505.34x = 163,539.95 × 70,749.77
  4. Step 4: Simplify right side
    118,505.34x = 11,570,412,676.86
  5. Step 5: Solve for x
    x = 11,570,412,676.86/118,505.34
  6. Step 6: Final answer
    x = 97,636.21

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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.