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Finding the Fourth Proportional to 19,157,661.90, 28,736,492.85 and 17,079,137.10

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Solution

The fourth proportional to 19,157,661.90, 28,736,492.85 and 17,079,137.10 is: 25,618,705.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157,661.90 : 28,736,492.85 = 17,079,137.10 : x
  2. Step 2: Convert to fraction form
    19,157,661.90/28,736,492.85 = 17,079,137.10/x
  3. Step 3: Cross multiply
    19,157,661.90x = 28,736,492.85 × 17,079,137.10
  4. Step 4: Simplify right side
    19,157,661.90x = 490,794,501,158,319.81
  5. Step 5: Solve for x
    x = 490,794,501,158,319.81/19,157,661.90
  6. Step 6: Final answer
    x = 25,618,705.65

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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.