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Finding the Fourth Proportional to 74,749,222.80, 112,003,111.80 and 42,304,640.40

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Solution

The fourth proportional to 74,749,222.80, 112,003,111.80 and 42,304,640.40 is: 63,388,637.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,749,222.80 : 112,003,111.80 = 42,304,640.40 : x
  2. Step 2: Convert to fraction form
    74,749,222.80/112,003,111.80 = 42,304,640.40/x
  3. Step 3: Cross multiply
    74,749,222.80x = 112,003,111.80 × 42,304,640.40
  4. Step 4: Simplify right side
    74,749,222.80x = 4,738,251,368,379,996
  5. Step 5: Solve for x
    x = 4,738,251,368,379,996/74,749,222.80
  6. Step 6: Final answer
    x = 63,388,637.24

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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.