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Finding the Fourth Proportional to 79,290.19, 118,978.35 and 46,034.16

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Solution

The fourth proportional to 79,290.19, 118,978.35 and 46,034.16 is: 69,076.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,290.19 : 118,978.35 = 46,034.16 : x
  2. Step 2: Convert to fraction form
    79,290.19/118,978.35 = 46,034.16/x
  3. Step 3: Cross multiply
    79,290.19x = 118,978.35 × 46,034.16
  4. Step 4: Simplify right side
    79,290.19x = 5,477,068,400.44
  5. Step 5: Solve for x
    x = 5,477,068,400.44/79,290.19
  6. Step 6: Final answer
    x = 69,076.24

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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.