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Finding the Fourth Proportional to 134,552, 185,681.76 and 74,936

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Solution

The fourth proportional to 134,552, 185,681.76 and 74,936 is: 103,411.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,552 : 185,681.76 = 74,936 : x
  2. Step 2: Convert to fraction form
    134,552/185,681.76 = 74,936/x
  3. Step 3: Cross multiply
    134,552x = 185,681.76 × 74,936
  4. Step 4: Simplify right side
    134,552x = 13,914,248,367.36
  5. Step 5: Solve for x
    x = 13,914,248,367.36/134,552
  6. Step 6: Final answer
    x = 103,411.68

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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.