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Finding the Fourth Proportional to 629,857,390.40, 882,707,339.20 and 629,857,390.40

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Solution

The fourth proportional to 629,857,390.40, 882,707,339.20 and 629,857,390.40 is: 882,707,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,390.40 : 882,707,339.20 = 629,857,390.40 : x
  2. Step 2: Convert to fraction form
    629,857,390.40/882,707,339.20 = 629,857,390.40/x
  3. Step 3: Cross multiply
    629,857,390.40x = 882,707,339.20 × 629,857,390.40
  4. Step 4: Simplify right side
    629,857,390.40x = 555,979,741,155,439,616
  5. Step 5: Solve for x
    x = 555,979,741,155,439,616/629,857,390.40
  6. Step 6: Final answer
    x = 882,707,339.20

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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.