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Finding the Fourth Proportional to 218,323.54, 326,875.68 and 118,124.32

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Solution

The fourth proportional to 218,323.54, 326,875.68 and 118,124.32 is: 176,856.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,323.54 : 326,875.68 = 118,124.32 : x
  2. Step 2: Convert to fraction form
    218,323.54/326,875.68 = 118,124.32/x
  3. Step 3: Cross multiply
    218,323.54x = 326,875.68 × 118,124.32
  4. Step 4: Simplify right side
    218,323.54x = 38,611,967,424.54
  5. Step 5: Solve for x
    x = 38,611,967,424.54/218,323.54
  6. Step 6: Final answer
    x = 176,856.64

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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.