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Finding the Fourth Proportional to 579,200.80, 868,801.20 and 537,210.40

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Solution

The fourth proportional to 579,200.80, 868,801.20 and 537,210.40 is: 805,815.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,200.80 : 868,801.20 = 537,210.40 : x
  2. Step 2: Convert to fraction form
    579,200.80/868,801.20 = 537,210.40/x
  3. Step 3: Cross multiply
    579,200.80x = 868,801.20 × 537,210.40
  4. Step 4: Simplify right side
    579,200.80x = 466,729,040,172.48
  5. Step 5: Solve for x
    x = 466,729,040,172.48/579,200.80
  6. Step 6: Final answer
    x = 805,815.60

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Half scale
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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.