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Finding the Fourth Proportional to 429,587.36, 644,134.12 and 177,042.20

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Solution

The fourth proportional to 429,587.36, 644,134.12 and 177,042.20 is: 265,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,587.36 : 644,134.12 = 177,042.20 : x
  2. Step 2: Convert to fraction form
    429,587.36/644,134.12 = 177,042.20/x
  3. Step 3: Cross multiply
    429,587.36x = 644,134.12 × 177,042.20
  4. Step 4: Simplify right side
    429,587.36x = 114,038,921,699.86
  5. Step 5: Solve for x
    x = 114,038,921,699.86/429,587.36
  6. Step 6: Final answer
    x = 265,461.54

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1.5x scale

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.