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Finding the Fourth Proportional to 470,253.80, 705,683.10 and 260,042.60

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Solution

The fourth proportional to 470,253.80, 705,683.10 and 260,042.60 is: 390,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,253.80 : 705,683.10 = 260,042.60 : x
  2. Step 2: Convert to fraction form
    470,253.80/705,683.10 = 260,042.60/x
  3. Step 3: Cross multiply
    470,253.80x = 705,683.10 × 260,042.60
  4. Step 4: Simplify right side
    470,253.80x = 183,507,668,100.06
  5. Step 5: Solve for x
    x = 183,507,668,100.06/470,253.80
  6. Step 6: Final answer
    x = 390,231.12

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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.