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Finding the Fourth Proportional to 235,802.48, 353,668.56 and 86,007.60

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Solution

The fourth proportional to 235,802.48, 353,668.56 and 86,007.60 is: 128,998.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,802.48 : 353,668.56 = 86,007.60 : x
  2. Step 2: Convert to fraction form
    235,802.48/353,668.56 = 86,007.60/x
  3. Step 3: Cross multiply
    235,802.48x = 353,668.56 × 86,007.60
  4. Step 4: Simplify right side
    235,802.48x = 30,418,184,041.06
  5. Step 5: Solve for x
    x = 30,418,184,041.06/235,802.48
  6. Step 6: Final answer
    x = 128,998.58

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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.