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Finding the Fourth Proportional to 10,888,978.30, 16,333,467.45 and 7,106,731.90

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Solution

The fourth proportional to 10,888,978.30, 16,333,467.45 and 7,106,731.90 is: 10,660,097.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888,978.30 : 16,333,467.45 = 7,106,731.90 : x
  2. Step 2: Convert to fraction form
    10,888,978.30/16,333,467.45 = 7,106,731.90/x
  3. Step 3: Cross multiply
    10,888,978.30x = 16,333,467.45 × 7,106,731.90
  4. Step 4: Simplify right side
    10,888,978.30x = 116,077,574,164,526.66
  5. Step 5: Solve for x
    x = 116,077,574,164,526.66/10,888,978.30
  6. Step 6: Final answer
    x = 10,660,097.85

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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.