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Finding the Fourth Proportional to 529,447.36, 729,921.90 and 359,386.24

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Solution

The fourth proportional to 529,447.36, 729,921.90 and 359,386.24 is: 495,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,447.36 : 729,921.90 = 359,386.24 : x
  2. Step 2: Convert to fraction form
    529,447.36/729,921.90 = 359,386.24/x
  3. Step 3: Cross multiply
    529,447.36x = 729,921.90 × 359,386.24
  4. Step 4: Simplify right side
    529,447.36x = 262,323,887,134.66
  5. Step 5: Solve for x
    x = 262,323,887,134.66/529,447.36
  6. Step 6: Final answer
    x = 495,467.36

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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.