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Finding the Fourth Proportional to 541,386.70, 812,189.40 and 186,436.60

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Solution

The fourth proportional to 541,386.70, 812,189.40 and 186,436.60 is: 279,692.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,386.70 : 812,189.40 = 186,436.60 : x
  2. Step 2: Convert to fraction form
    541,386.70/812,189.40 = 186,436.60/x
  3. Step 3: Cross multiply
    541,386.70x = 812,189.40 × 186,436.60
  4. Step 4: Simplify right side
    541,386.70x = 151,421,830,292.04
  5. Step 5: Solve for x
    x = 151,421,830,292.04/541,386.70
  6. Step 6: Final answer
    x = 279,692.56

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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.