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Finding the Fourth Proportional to 261,319.44, 391,852.40 and 153,278.32

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Solution

The fourth proportional to 261,319.44, 391,852.40 and 153,278.32 is: 229,843.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,319.44 : 391,852.40 = 153,278.32 : x
  2. Step 2: Convert to fraction form
    261,319.44/391,852.40 = 153,278.32/x
  3. Step 3: Cross multiply
    261,319.44x = 391,852.40 × 153,278.32
  4. Step 4: Simplify right side
    261,319.44x = 60,062,477,559.97
  5. Step 5: Solve for x
    x = 60,062,477,559.97/261,319.44
  6. Step 6: Final answer
    x = 229,843.13

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1.5x scale

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.