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Finding the Fourth Proportional to 1,887,823.53, 2,829,212.82 and 688,618.53

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Solution

The fourth proportional to 1,887,823.53, 2,829,212.82 and 688,618.53 is: 1,032,007.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887,823.53 : 2,829,212.82 = 688,618.53 : x
  2. Step 2: Convert to fraction form
    1,887,823.53/2,829,212.82 = 688,618.53/x
  3. Step 3: Cross multiply
    1,887,823.53x = 2,829,212.82 × 688,618.53
  4. Step 4: Simplify right side
    1,887,823.53x = 1,948,248,373,165.55
  5. Step 5: Solve for x
    x = 1,948,248,373,165.55/1,887,823.53
  6. Step 6: Final answer
    x = 1,032,007.68

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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.