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Finding the Fourth Proportional to 74,590,411.20, 111,885,616.80 and 74,590,411.20

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Solution

The fourth proportional to 74,590,411.20, 111,885,616.80 and 74,590,411.20 is: 111,885,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,590,411.20 : 111,885,616.80 = 74,590,411.20 : x
  2. Step 2: Convert to fraction form
    74,590,411.20/111,885,616.80 = 74,590,411.20/x
  3. Step 3: Cross multiply
    74,590,411.20x = 111,885,616.80 × 74,590,411.20
  4. Step 4: Simplify right side
    74,590,411.20x = 8,345,594,164,477,628
  5. Step 5: Solve for x
    x = 8,345,594,164,477,628/74,590,411.20
  6. Step 6: Final answer
    x = 111,885,616.80

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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.