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Finding the Fourth Proportional to 545,868.90, 818,803.35 and 190,845.90

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Solution

The fourth proportional to 545,868.90, 818,803.35 and 190,845.90 is: 286,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,868.90 : 818,803.35 = 190,845.90 : x
  2. Step 2: Convert to fraction form
    545,868.90/818,803.35 = 190,845.90/x
  3. Step 3: Cross multiply
    545,868.90x = 818,803.35 × 190,845.90
  4. Step 4: Simplify right side
    545,868.90x = 156,265,262,253.77
  5. Step 5: Solve for x
    x = 156,265,262,253.77/545,868.90
  6. Step 6: Final answer
    x = 286,268.85

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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.