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Finding the Fourth Proportional to 874,987.80, 1,312,481.70 and 735,019.80

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Solution

The fourth proportional to 874,987.80, 1,312,481.70 and 735,019.80 is: 1,102,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,987.80 : 1,312,481.70 = 735,019.80 : x
  2. Step 2: Convert to fraction form
    874,987.80/1,312,481.70 = 735,019.80/x
  3. Step 3: Cross multiply
    874,987.80x = 1,312,481.70 × 735,019.80
  4. Step 4: Simplify right side
    874,987.80x = 964,700,036,637.66
  5. Step 5: Solve for x
    x = 964,700,036,637.66/874,987.80
  6. Step 6: Final answer
    x = 1,102,529.70

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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.