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Finding the Fourth Proportional to 710,079.20, 1,065,118.80 and 551,448.80

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Solution

The fourth proportional to 710,079.20, 1,065,118.80 and 551,448.80 is: 827,173.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,079.20 : 1,065,118.80 = 551,448.80 : x
  2. Step 2: Convert to fraction form
    710,079.20/1,065,118.80 = 551,448.80/x
  3. Step 3: Cross multiply
    710,079.20x = 1,065,118.80 × 551,448.80
  4. Step 4: Simplify right side
    710,079.20x = 587,358,484,117.44
  5. Step 5: Solve for x
    x = 587,358,484,117.44/710,079.20
  6. Step 6: Final answer
    x = 827,173.20

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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.