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Finding the Fourth Proportional to 470,543.03, 649,353.50 and 255,683.10

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Solution

The fourth proportional to 470,543.03, 649,353.50 and 255,683.10 is: 352,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,543.03 : 649,353.50 = 255,683.10 : x
  2. Step 2: Convert to fraction form
    470,543.03/649,353.50 = 255,683.10/x
  3. Step 3: Cross multiply
    470,543.03x = 649,353.50 × 255,683.10
  4. Step 4: Simplify right side
    470,543.03x = 166,028,713,121.17
  5. Step 5: Solve for x
    x = 166,028,713,121.17/470,543.03
  6. Step 6: Final answer
    x = 352,844.91

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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.