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Finding the Fourth Proportional to 947,553,205.70, 1,421,329,808.55 and 947,553,205.70

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Solution

The fourth proportional to 947,553,205.70, 1,421,329,808.55 and 947,553,205.70 is: 1,421,329,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,553,205.70 : 1,421,329,808.55 = 947,553,205.70 : x
  2. Step 2: Convert to fraction form
    947,553,205.70/1,421,329,808.55 = 947,553,205.70/x
  3. Step 3: Cross multiply
    947,553,205.70x = 1,421,329,808.55 × 947,553,205.70
  4. Step 4: Simplify right side
    947,553,205.70x = 1,346,785,616,448,519,680
  5. Step 5: Solve for x
    x = 1,346,785,616,448,519,680/947,553,205.70
  6. Step 6: Final answer
    x = 1,421,329,808.55

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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.