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Finding the Fourth Proportional to 619,889.60, 929,834.40 and 514,913.60

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Solution

The fourth proportional to 619,889.60, 929,834.40 and 514,913.60 is: 772,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,889.60 : 929,834.40 = 514,913.60 : x
  2. Step 2: Convert to fraction form
    619,889.60/929,834.40 = 514,913.60/x
  3. Step 3: Cross multiply
    619,889.60x = 929,834.40 × 514,913.60
  4. Step 4: Simplify right side
    619,889.60x = 478,784,378,307.84
  5. Step 5: Solve for x
    x = 478,784,378,307.84/619,889.60
  6. Step 6: Final answer
    x = 772,370.40

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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.