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Finding the Fourth Proportional to 472,392,623.70, 659,819,123.10 and 472,392,623.70

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Solution

The fourth proportional to 472,392,623.70, 659,819,123.10 and 472,392,623.70 is: 659,819,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,623.70 : 659,819,123.10 = 472,392,623.70 : x
  2. Step 2: Convert to fraction form
    472,392,623.70/659,819,123.10 = 472,392,623.70/x
  3. Step 3: Cross multiply
    472,392,623.70x = 659,819,123.10 × 472,392,623.70
  4. Step 4: Simplify right side
    472,392,623.70x = 311,693,686,728,642,304
  5. Step 5: Solve for x
    x = 311,693,686,728,642,304/472,392,623.70
  6. Step 6: Final answer
    x = 659,819,123.10

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Double scale
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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.