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Finding the Fourth Proportional to 425,307.30, 586,664.55 and 253,109.82

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Solution

The fourth proportional to 425,307.30, 586,664.55 and 253,109.82 is: 349,137.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,307.30 : 586,664.55 = 253,109.82 : x
  2. Step 2: Convert to fraction form
    425,307.30/586,664.55 = 253,109.82/x
  3. Step 3: Cross multiply
    425,307.30x = 586,664.55 × 253,109.82
  4. Step 4: Simplify right side
    425,307.30x = 148,490,558,650.88
  5. Step 5: Solve for x
    x = 148,490,558,650.88/425,307.30
  6. Step 6: Final answer
    x = 349,137.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.