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Finding the Fourth Proportional to 470,903.70, 649,848.51 and 256,044.60

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Solution

The fourth proportional to 470,903.70, 649,848.51 and 256,044.60 is: 353,342.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,903.70 : 649,848.51 = 256,044.60 : x
  2. Step 2: Convert to fraction form
    470,903.70/649,848.51 = 256,044.60/x
  3. Step 3: Cross multiply
    470,903.70x = 649,848.51 × 256,044.60
  4. Step 4: Simplify right side
    470,903.70x = 166,390,201,803.55
  5. Step 5: Solve for x
    x = 166,390,201,803.55/470,903.70
  6. Step 6: Final answer
    x = 353,342.31

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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.