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Finding the Fourth Proportional to 261,445.32, 360,806.40 and 154,019.88

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Solution

The fourth proportional to 261,445.32, 360,806.40 and 154,019.88 is: 212,554.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,445.32 : 360,806.40 = 154,019.88 : x
  2. Step 2: Convert to fraction form
    261,445.32/360,806.40 = 154,019.88/x
  3. Step 3: Cross multiply
    261,445.32x = 360,806.40 × 154,019.88
  4. Step 4: Simplify right side
    261,445.32x = 55,571,358,431.23
  5. Step 5: Solve for x
    x = 55,571,358,431.23/261,445.32
  6. Step 6: Final answer
    x = 212,554.42

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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.