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Finding the Fourth Proportional to 118,547.20, 177,734.40 and 48,390.40

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Solution

The fourth proportional to 118,547.20, 177,734.40 and 48,390.40 is: 72,550.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,547.20 : 177,734.40 = 48,390.40 : x
  2. Step 2: Convert to fraction form
    118,547.20/177,734.40 = 48,390.40/x
  3. Step 3: Cross multiply
    118,547.20x = 177,734.40 × 48,390.40
  4. Step 4: Simplify right side
    118,547.20x = 8,600,638,709.76
  5. Step 5: Solve for x
    x = 8,600,638,709.76/118,547.20
  6. Step 6: Final answer
    x = 72,550.33

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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.