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Finding the Fourth Proportional to 715,968,455.70, 1,005,076,815.90 and 715,968,455.70

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Solution

The fourth proportional to 715,968,455.70, 1,005,076,815.90 and 715,968,455.70 is: 1,005,076,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,968,455.70 : 1,005,076,815.90 = 715,968,455.70 : x
  2. Step 2: Convert to fraction form
    715,968,455.70/1,005,076,815.90 = 715,968,455.70/x
  3. Step 3: Cross multiply
    715,968,455.70x = 1,005,076,815.90 × 715,968,455.70
  4. Step 4: Simplify right side
    715,968,455.70x = 719,603,295,739,796,224
  5. Step 5: Solve for x
    x = 719,603,295,739,796,224/715,968,455.70
  6. Step 6: Final answer
    x = 1,005,076,815.90

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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.