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Finding the Fourth Proportional to 470,039.79, 648,662.45 and 255,179.69

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Solution

The fourth proportional to 470,039.79, 648,662.45 and 255,179.69 is: 352,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,039.79 : 648,662.45 = 255,179.69 : x
  2. Step 2: Convert to fraction form
    470,039.79/648,662.45 = 255,179.69/x
  3. Step 3: Cross multiply
    470,039.79x = 648,662.45 × 255,179.69
  4. Step 4: Simplify right side
    470,039.79x = 165,525,482,905.64
  5. Step 5: Solve for x
    x = 165,525,482,905.64/470,039.79
  6. Step 6: Final answer
    x = 352,152.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.