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Finding the Fourth Proportional to 545,891.40, 818,837.10 and 190,868.40

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Solution

The fourth proportional to 545,891.40, 818,837.10 and 190,868.40 is: 286,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,891.40 : 818,837.10 = 190,868.40 : x
  2. Step 2: Convert to fraction form
    545,891.40/818,837.10 = 190,868.40/x
  3. Step 3: Cross multiply
    545,891.40x = 818,837.10 × 190,868.40
  4. Step 4: Simplify right side
    545,891.40x = 156,290,127,137.64
  5. Step 5: Solve for x
    x = 156,290,127,137.64/545,891.40
  6. Step 6: Final answer
    x = 286,302.60

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Double scale
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Similar ratio
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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.