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Finding the Fourth Proportional to 6,644,547.70, 9,966,821.55 and 6,644,547.70

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Solution

The fourth proportional to 6,644,547.70, 9,966,821.55 and 6,644,547.70 is: 9,966,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,547.70 : 9,966,821.55 = 6,644,547.70 : x
  2. Step 2: Convert to fraction form
    6,644,547.70/9,966,821.55 = 6,644,547.70/x
  3. Step 3: Cross multiply
    6,644,547.70x = 9,966,821.55 × 6,644,547.70
  4. Step 4: Simplify right side
    6,644,547.70x = 66,225,021,206,362.95
  5. Step 5: Solve for x
    x = 66,225,021,206,362.95/6,644,547.70
  6. Step 6: Final answer
    x = 9,966,821.55

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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.