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Finding the Fourth Proportional to 338,897.90, 508,035.80 and 117,126.38

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Solution

The fourth proportional to 338,897.90, 508,035.80 and 117,126.38 is: 175,582.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,897.90 : 508,035.80 = 117,126.38 : x
  2. Step 2: Convert to fraction form
    338,897.90/508,035.80 = 117,126.38/x
  3. Step 3: Cross multiply
    338,897.90x = 508,035.80 × 117,126.38
  4. Step 4: Simplify right side
    338,897.90x = 59,504,391,038.59
  5. Step 5: Solve for x
    x = 59,504,391,038.59/338,897.90
  6. Step 6: Final answer
    x = 175,582.06

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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.