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Finding the Fourth Proportional to 885,893.60, 1,328,840.40 and 619,954.40

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Solution

The fourth proportional to 885,893.60, 1,328,840.40 and 619,954.40 is: 929,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,893.60 : 1,328,840.40 = 619,954.40 : x
  2. Step 2: Convert to fraction form
    885,893.60/1,328,840.40 = 619,954.40/x
  3. Step 3: Cross multiply
    885,893.60x = 1,328,840.40 × 619,954.40
  4. Step 4: Simplify right side
    885,893.60x = 823,820,452,877.76
  5. Step 5: Solve for x
    x = 823,820,452,877.76/885,893.60
  6. Step 6: Final answer
    x = 929,931.60

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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.