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Finding the Fourth Proportional to 669,405.53, 923,548.71 and 427,829.51

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Solution

The fourth proportional to 669,405.53, 923,548.71 and 427,829.51 is: 590,257.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,405.53 : 923,548.71 = 427,829.51 : x
  2. Step 2: Convert to fraction form
    669,405.53/923,548.71 = 427,829.51/x
  3. Step 3: Cross multiply
    669,405.53x = 923,548.71 × 427,829.51
  4. Step 4: Simplify right side
    669,405.53x = 395,121,387,442.69
  5. Step 5: Solve for x
    x = 395,121,387,442.69/669,405.53
  6. Step 6: Final answer
    x = 590,257.14

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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.