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Finding the Fourth Proportional to 74,598.92, 102,935.66 and 42,328.52

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Solution

The fourth proportional to 74,598.92, 102,935.66 and 42,328.52 is: 58,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,598.92 : 102,935.66 = 42,328.52 : x
  2. Step 2: Convert to fraction form
    74,598.92/102,935.66 = 42,328.52/x
  3. Step 3: Cross multiply
    74,598.92x = 102,935.66 × 42,328.52
  4. Step 4: Simplify right side
    74,598.92x = 4,357,114,143.02
  5. Step 5: Solve for x
    x = 4,357,114,143.02/74,598.92
  6. Step 6: Final answer
    x = 58,407.20

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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.