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Finding the Fourth Proportional to 673,618.40, 929,695.56 and 419,051.60

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Solution

The fourth proportional to 673,618.40, 929,695.56 and 419,051.60 is: 578,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,618.40 : 929,695.56 = 419,051.60 : x
  2. Step 2: Convert to fraction form
    673,618.40/929,695.56 = 419,051.60/x
  3. Step 3: Cross multiply
    673,618.40x = 929,695.56 × 419,051.60
  4. Step 4: Simplify right side
    673,618.40x = 389,590,411,930.90
  5. Step 5: Solve for x
    x = 389,590,411,930.90/673,618.40
  6. Step 6: Final answer
    x = 578,354.77

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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.