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Finding the Fourth Proportional to 265,572.60, 398,421.05 and 105,657.59

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Solution

The fourth proportional to 265,572.60, 398,421.05 and 105,657.59 is: 158,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,572.60 : 398,421.05 = 105,657.59 : x
  2. Step 2: Convert to fraction form
    265,572.60/398,421.05 = 105,657.59/x
  3. Step 3: Cross multiply
    265,572.60x = 398,421.05 × 105,657.59
  4. Step 4: Simplify right side
    265,572.60x = 42,096,206,220.31
  5. Step 5: Solve for x
    x = 42,096,206,220.31/265,572.60
  6. Step 6: Final answer
    x = 158,511.10

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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.