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Finding the Fourth Proportional to 74,887.61, 112,275.93 and 35,398.58

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Solution

The fourth proportional to 74,887.61, 112,275.93 and 35,398.58 is: 53,071.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887.61 : 112,275.93 = 35,398.58 : x
  2. Step 2: Convert to fraction form
    74,887.61/112,275.93 = 35,398.58/x
  3. Step 3: Cross multiply
    74,887.61x = 112,275.93 × 35,398.58
  4. Step 4: Simplify right side
    74,887.61x = 3,974,408,490.18
  5. Step 5: Solve for x
    x = 3,974,408,490.18/74,887.61
  6. Step 6: Final answer
    x = 53,071.64

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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.