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Finding the Fourth Proportional to 261,406.68, 360,685.26 and 153,937.32

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Solution

The fourth proportional to 261,406.68, 360,685.26 and 153,937.32 is: 212,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,406.68 : 360,685.26 = 153,937.32 : x
  2. Step 2: Convert to fraction form
    261,406.68/360,685.26 = 153,937.32/x
  3. Step 3: Cross multiply
    261,406.68x = 360,685.26 × 153,937.32
  4. Step 4: Simplify right side
    261,406.68x = 55,522,922,287.90
  5. Step 5: Solve for x
    x = 55,522,922,287.90/261,406.68
  6. Step 6: Final answer
    x = 212,400.55

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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.