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Finding the Fourth Proportional to 525,114.40, 787,671.60 and 192,647.20

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Solution

The fourth proportional to 525,114.40, 787,671.60 and 192,647.20 is: 288,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,114.40 : 787,671.60 = 192,647.20 : x
  2. Step 2: Convert to fraction form
    525,114.40/787,671.60 = 192,647.20/x
  3. Step 3: Cross multiply
    525,114.40x = 787,671.60 × 192,647.20
  4. Step 4: Simplify right side
    525,114.40x = 151,742,728,259.52
  5. Step 5: Solve for x
    x = 151,742,728,259.52/525,114.40
  6. Step 6: Final answer
    x = 288,970.80

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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.