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Finding the Fourth Proportional to 768,083.70, 1,076,423.10 and 768,083.70

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Solution

The fourth proportional to 768,083.70, 1,076,423.10 and 768,083.70 is: 1,076,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,083.70 : 1,076,423.10 = 768,083.70 : x
  2. Step 2: Convert to fraction form
    768,083.70/1,076,423.10 = 768,083.70/x
  3. Step 3: Cross multiply
    768,083.70x = 1,076,423.10 × 768,083.70
  4. Step 4: Simplify right side
    768,083.70x = 826,783,037,413.47
  5. Step 5: Solve for x
    x = 826,783,037,413.47/768,083.70
  6. Step 6: Final answer
    x = 1,076,423.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.