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Finding the Fourth Proportional to 38,493,690.09, 57,704,368.09 and 12,916,762.89

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Solution

The fourth proportional to 38,493,690.09, 57,704,368.09 and 12,916,762.89 is: 19,363,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,493,690.09 : 57,704,368.09 = 12,916,762.89 : x
  2. Step 2: Convert to fraction form
    38,493,690.09/57,704,368.09 = 12,916,762.89/x
  3. Step 3: Cross multiply
    38,493,690.09x = 57,704,368.09 × 12,916,762.89
  4. Step 4: Simplify right side
    38,493,690.09x = 745,353,640,335,812.25
  5. Step 5: Solve for x
    x = 745,353,640,335,812.25/38,493,690.09
  6. Step 6: Final answer
    x = 19,363,008.29

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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.