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Finding the Fourth Proportional to 579,323.70, 868,985.55 and 555,704.10

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Solution

The fourth proportional to 579,323.70, 868,985.55 and 555,704.10 is: 833,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,323.70 : 868,985.55 = 555,704.10 : x
  2. Step 2: Convert to fraction form
    579,323.70/868,985.55 = 555,704.10/x
  3. Step 3: Cross multiply
    579,323.70x = 868,985.55 × 555,704.10
  4. Step 4: Simplify right side
    579,323.70x = 482,898,832,975.76
  5. Step 5: Solve for x
    x = 482,898,832,975.76/579,323.70
  6. Step 6: Final answer
    x = 833,556.15

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Double scale
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Similar ratio
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1.5x scale

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.