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Finding the Fourth Proportional to 893,503.64, 1,233,044.55 and 485,605.50

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Solution

The fourth proportional to 893,503.64, 1,233,044.55 and 485,605.50 is: 670,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,503.64 : 1,233,044.55 = 485,605.50 : x
  2. Step 2: Convert to fraction form
    893,503.64/1,233,044.55 = 485,605.50/x
  3. Step 3: Cross multiply
    893,503.64x = 1,233,044.55 × 485,605.50
  4. Step 4: Simplify right side
    893,503.64x = 598,773,215,225.03
  5. Step 5: Solve for x
    x = 598,773,215,225.03/893,503.64
  6. Step 6: Final answer
    x = 670,140.77

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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.