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Finding the Fourth Proportional to 261,077.99, 360,260.55 and 153,641.61

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Solution

The fourth proportional to 261,077.99, 360,260.55 and 153,641.61 is: 212,009.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,077.99 : 360,260.55 = 153,641.61 : x
  2. Step 2: Convert to fraction form
    261,077.99/360,260.55 = 153,641.61/x
  3. Step 3: Cross multiply
    261,077.99x = 360,260.55 × 153,641.61
  4. Step 4: Simplify right side
    261,077.99x = 55,351,010,921.49
  5. Step 5: Solve for x
    x = 55,351,010,921.49/261,077.99
  6. Step 6: Final answer
    x = 212,009.49

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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.