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Finding the Fourth Proportional to 699,196,153.20, 977,060,629.20 and 699,196,153.20

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Solution

The fourth proportional to 699,196,153.20, 977,060,629.20 and 699,196,153.20 is: 977,060,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,196,153.20 : 977,060,629.20 = 699,196,153.20 : x
  2. Step 2: Convert to fraction form
    699,196,153.20/977,060,629.20 = 699,196,153.20/x
  3. Step 3: Cross multiply
    699,196,153.20x = 977,060,629.20 × 699,196,153.20
  4. Step 4: Simplify right side
    699,196,153.20x = 683,157,033,379,811,712
  5. Step 5: Solve for x
    x = 683,157,033,379,811,712/699,196,153.20
  6. Step 6: Final answer
    x = 977,060,629.20

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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.