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Finding the Fourth Proportional to 681,477.84, 939,801.56 and 538,579.26

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Solution

The fourth proportional to 681,477.84, 939,801.56 and 538,579.26 is: 742,735.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,477.84 : 939,801.56 = 538,579.26 : x
  2. Step 2: Convert to fraction form
    681,477.84/939,801.56 = 538,579.26/x
  3. Step 3: Cross multiply
    681,477.84x = 939,801.56 × 538,579.26
  4. Step 4: Simplify right side
    681,477.84x = 506,157,626,038.75
  5. Step 5: Solve for x
    x = 506,157,626,038.75/681,477.84
  6. Step 6: Final answer
    x = 742,735.27

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1.5x scale

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.