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Finding the Fourth Proportional to 478,786.80, 718,152.54 and 175,385.67

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Solution

The fourth proportional to 478,786.80, 718,152.54 and 175,385.67 is: 263,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,786.80 : 718,152.54 = 175,385.67 : x
  2. Step 2: Convert to fraction form
    478,786.80/718,152.54 = 175,385.67/x
  3. Step 3: Cross multiply
    478,786.80x = 718,152.54 × 175,385.67
  4. Step 4: Simplify right side
    478,786.80x = 125,953,664,390.10
  5. Step 5: Solve for x
    x = 125,953,664,390.10/478,786.80
  6. Step 6: Final answer
    x = 263,068.37

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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.