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Finding the Fourth Proportional to 7,163,304.62, 9,891,504.59 and 6,931,667.26

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Solution

The fourth proportional to 7,163,304.62, 9,891,504.59 and 6,931,667.26 is: 9,571,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163,304.62 : 9,891,504.59 = 6,931,667.26 : x
  2. Step 2: Convert to fraction form
    7,163,304.62/9,891,504.59 = 6,931,667.26/x
  3. Step 3: Cross multiply
    7,163,304.62x = 9,891,504.59 × 6,931,667.26
  4. Step 4: Simplify right side
    7,163,304.62x = 68,564,618,518,642.72
  5. Step 5: Solve for x
    x = 68,564,618,518,642.72/7,163,304.62
  6. Step 6: Final answer
    x = 9,571,646.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.