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Finding the Fourth Proportional to 7,020,999.70, 9,857,743.10 and 7,020,999.70

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Solution

The fourth proportional to 7,020,999.70, 9,857,743.10 and 7,020,999.70 is: 9,857,743.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020,999.70 : 9,857,743.10 = 7,020,999.70 : x
  2. Step 2: Convert to fraction form
    7,020,999.70/9,857,743.10 = 7,020,999.70/x
  3. Step 3: Cross multiply
    7,020,999.70x = 9,857,743.10 × 7,020,999.70
  4. Step 4: Simplify right side
    7,020,999.70x = 69,211,211,347,777.07
  5. Step 5: Solve for x
    x = 69,211,211,347,777.07/7,020,999.70
  6. Step 6: Final answer
    x = 9,857,743.10

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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.