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Finding the Fourth Proportional to 261,187.53, 360,509.73 and 153,792.33

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Solution

The fourth proportional to 261,187.53, 360,509.73 and 153,792.33 is: 212,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,187.53 : 360,509.73 = 153,792.33 : x
  2. Step 2: Convert to fraction form
    261,187.53/360,509.73 = 153,792.33/x
  3. Step 3: Cross multiply
    261,187.53x = 360,509.73 × 153,792.33
  4. Step 4: Simplify right side
    261,187.53x = 55,443,631,364.37
  5. Step 5: Solve for x
    x = 55,443,631,364.37/261,187.53
  6. Step 6: Final answer
    x = 212,275.19

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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.