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Finding the Fourth Proportional to 28,681,017.65, 40,183,284.55 and 28,681,017.65

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Solution

The fourth proportional to 28,681,017.65, 40,183,284.55 and 28,681,017.65 is: 40,183,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681,017.65 : 40,183,284.55 = 28,681,017.65 : x
  2. Step 2: Convert to fraction form
    28,681,017.65/40,183,284.55 = 28,681,017.65/x
  3. Step 3: Cross multiply
    28,681,017.65x = 40,183,284.55 × 28,681,017.65
  4. Step 4: Simplify right side
    28,681,017.65x = 1,152,497,493,413,522.25
  5. Step 5: Solve for x
    x = 1,152,497,493,413,522.25/28,681,017.65
  6. Step 6: Final answer
    x = 40,183,284.55

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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.