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Finding the Fourth Proportional to 73,116.80, 109,480.80 and 46,678.40

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Solution

The fourth proportional to 73,116.80, 109,480.80 and 46,678.40 is: 69,893.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,116.80 : 109,480.80 = 46,678.40 : x
  2. Step 2: Convert to fraction form
    73,116.80/109,480.80 = 46,678.40/x
  3. Step 3: Cross multiply
    73,116.80x = 109,480.80 × 46,678.40
  4. Step 4: Simplify right side
    73,116.80x = 5,110,388,574.72
  5. Step 5: Solve for x
    x = 5,110,388,574.72/73,116.80
  6. Step 6: Final answer
    x = 69,893.49

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1.5x scale

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.