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Finding the Fourth Proportional to 261,617.52, 361,101.18 and 154,259.04

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Solution

The fourth proportional to 261,617.52, 361,101.18 and 154,259.04 is: 212,918.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,617.52 : 361,101.18 = 154,259.04 : x
  2. Step 2: Convert to fraction form
    261,617.52/361,101.18 = 154,259.04/x
  3. Step 3: Cross multiply
    261,617.52x = 361,101.18 × 154,259.04
  4. Step 4: Simplify right side
    261,617.52x = 55,703,121,369.67
  5. Step 5: Solve for x
    x = 55,703,121,369.67/261,617.52
  6. Step 6: Final answer
    x = 212,918.16

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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.