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Finding the Fourth Proportional to 79,400.64, 118,945.28 and 46,050.64

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Solution

The fourth proportional to 79,400.64, 118,945.28 and 46,050.64 is: 68,985.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,400.64 : 118,945.28 = 46,050.64 : x
  2. Step 2: Convert to fraction form
    79,400.64/118,945.28 = 46,050.64/x
  3. Step 3: Cross multiply
    79,400.64x = 118,945.28 × 46,050.64
  4. Step 4: Simplify right side
    79,400.64x = 5,477,506,268.98
  5. Step 5: Solve for x
    x = 5,477,506,268.98/79,400.64
  6. Step 6: Final answer
    x = 68,985.67

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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.