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Finding the Fourth Proportional to 702,120.40, 1,051,625.40 and 577,704.40

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Solution

The fourth proportional to 702,120.40, 1,051,625.40 and 577,704.40 is: 865,276.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,120.40 : 1,051,625.40 = 577,704.40 : x
  2. Step 2: Convert to fraction form
    702,120.40/1,051,625.40 = 577,704.40/x
  3. Step 3: Cross multiply
    702,120.40x = 1,051,625.40 × 577,704.40
  4. Step 4: Simplify right side
    702,120.40x = 607,528,620,731.76
  5. Step 5: Solve for x
    x = 607,528,620,731.76/702,120.40
  6. Step 6: Final answer
    x = 865,276.98

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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.