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Finding the Fourth Proportional to 74,591.51, 102,910.32 and 42,322.32

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Solution

The fourth proportional to 74,591.51, 102,910.32 and 42,322.32 is: 58,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,591.51 : 102,910.32 = 42,322.32 : x
  2. Step 2: Convert to fraction form
    74,591.51/102,910.32 = 42,322.32/x
  3. Step 3: Cross multiply
    74,591.51x = 102,910.32 × 42,322.32
  4. Step 4: Simplify right side
    74,591.51x = 4,355,403,494.34
  5. Step 5: Solve for x
    x = 4,355,403,494.34/74,591.51
  6. Step 6: Final answer
    x = 58,390.07

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1.5x scale

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.