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Finding the Fourth Proportional to 922,897.45, 1,288,907.15 and 922,897.45

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Solution

The fourth proportional to 922,897.45, 1,288,907.15 and 922,897.45 is: 1,288,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,897.45 : 1,288,907.15 = 922,897.45 : x
  2. Step 2: Convert to fraction form
    922,897.45/1,288,907.15 = 922,897.45/x
  3. Step 3: Cross multiply
    922,897.45x = 1,288,907.15 × 922,897.45
  4. Step 4: Simplify right side
    922,897.45x = 1,189,529,122,021.77
  5. Step 5: Solve for x
    x = 1,189,529,122,021.77/922,897.45
  6. Step 6: Final answer
    x = 1,288,907.15

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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.