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Finding the Fourth Proportional to 691,803,307.20, 1,037,704,960.80 and 691,803,307.20

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Solution

The fourth proportional to 691,803,307.20, 1,037,704,960.80 and 691,803,307.20 is: 1,037,704,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,803,307.20 : 1,037,704,960.80 = 691,803,307.20 : x
  2. Step 2: Convert to fraction form
    691,803,307.20/1,037,704,960.80 = 691,803,307.20/x
  3. Step 3: Cross multiply
    691,803,307.20x = 1,037,704,960.80 × 691,803,307.20
  4. Step 4: Simplify right side
    691,803,307.20x = 717,887,723,779,286,400
  5. Step 5: Solve for x
    x = 717,887,723,779,286,400/691,803,307.20
  6. Step 6: Final answer
    x = 1,037,704,960.80

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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.