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Finding the Fourth Proportional to 61,073,304.80, 91,609,957.20 and 51,507,366.80

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Solution

The fourth proportional to 61,073,304.80, 91,609,957.20 and 51,507,366.80 is: 77,261,050.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,073,304.80 : 91,609,957.20 = 51,507,366.80 : x
  2. Step 2: Convert to fraction form
    61,073,304.80/91,609,957.20 = 51,507,366.80/x
  3. Step 3: Cross multiply
    61,073,304.80x = 91,609,957.20 × 51,507,366.80
  4. Step 4: Simplify right side
    61,073,304.80x = 4,718,587,668,032,701
  5. Step 5: Solve for x
    x = 4,718,587,668,032,701/61,073,304.80
  6. Step 6: Final answer
    x = 77,261,050.20

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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.