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Finding the Fourth Proportional to 706,102.56, 973,630.56 and 661,312.80

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Solution

The fourth proportional to 706,102.56, 973,630.56 and 661,312.80 is: 911,870.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,102.56 : 973,630.56 = 661,312.80 : x
  2. Step 2: Convert to fraction form
    706,102.56/973,630.56 = 661,312.80/x
  3. Step 3: Cross multiply
    706,102.56x = 973,630.56 × 661,312.80
  4. Step 4: Simplify right side
    706,102.56x = 643,874,351,799.17
  5. Step 5: Solve for x
    x = 643,874,351,799.17/706,102.56
  6. Step 6: Final answer
    x = 911,870.86

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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.