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Finding the Fourth Proportional to 268,187,978.82, 370,066,205.90 and 155,176,897.08

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Solution

The fourth proportional to 268,187,978.82, 370,066,205.90 and 155,176,897.08 is: 214,124,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,187,978.82 : 370,066,205.90 = 155,176,897.08 : x
  2. Step 2: Convert to fraction form
    268,187,978.82/370,066,205.90 = 155,176,897.08/x
  3. Step 3: Cross multiply
    268,187,978.82x = 370,066,205.90 × 155,176,897.08
  4. Step 4: Simplify right side
    268,187,978.82x = 57,425,725,545,730,392
  5. Step 5: Solve for x
    x = 57,425,725,545,730,392/268,187,978.82
  6. Step 6: Final answer
    x = 214,124,905.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.