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Finding the Fourth Proportional to 74,809.60, 112,275.60 and 74,226.40

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Solution

The fourth proportional to 74,809.60, 112,275.60 and 74,226.40 is: 111,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,809.60 : 112,275.60 = 74,226.40 : x
  2. Step 2: Convert to fraction form
    74,809.60/112,275.60 = 74,226.40/x
  3. Step 3: Cross multiply
    74,809.60x = 112,275.60 × 74,226.40
  4. Step 4: Simplify right side
    74,809.60x = 8,333,813,595.84
  5. Step 5: Solve for x
    x = 8,333,813,595.84/74,809.60
  6. Step 6: Final answer
    x = 111,400.32

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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.