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Finding the Fourth Proportional to 854,572.40, 1,281,858.60 and 535,707.80

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Solution

The fourth proportional to 854,572.40, 1,281,858.60 and 535,707.80 is: 803,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,572.40 : 1,281,858.60 = 535,707.80 : x
  2. Step 2: Convert to fraction form
    854,572.40/1,281,858.60 = 535,707.80/x
  3. Step 3: Cross multiply
    854,572.40x = 1,281,858.60 × 535,707.80
  4. Step 4: Simplify right side
    854,572.40x = 686,701,650,517.08
  5. Step 5: Solve for x
    x = 686,701,650,517.08/854,572.40
  6. Step 6: Final answer
    x = 803,561.70

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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.