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Finding the Fourth Proportional to 8,900,501.45, 12,489,045.55 and 8,900,501.45

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Solution

The fourth proportional to 8,900,501.45, 12,489,045.55 and 8,900,501.45 is: 12,489,045.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,900,501.45 : 12,489,045.55 = 8,900,501.45 : x
  2. Step 2: Convert to fraction form
    8,900,501.45/12,489,045.55 = 8,900,501.45/x
  3. Step 3: Cross multiply
    8,900,501.45x = 12,489,045.55 × 8,900,501.45
  4. Step 4: Simplify right side
    8,900,501.45x = 111,158,768,026,891.05
  5. Step 5: Solve for x
    x = 111,158,768,026,891.05/8,900,501.45
  6. Step 6: Final answer
    x = 12,489,045.55

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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.