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Finding the Fourth Proportional to 529,113.06, 730,181.54 and 287,400.35

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Solution

The fourth proportional to 529,113.06, 730,181.54 and 287,400.35 is: 396,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,113.06 : 730,181.54 = 287,400.35 : x
  2. Step 2: Convert to fraction form
    529,113.06/730,181.54 = 287,400.35/x
  3. Step 3: Cross multiply
    529,113.06x = 730,181.54 × 287,400.35
  4. Step 4: Simplify right side
    529,113.06x = 209,854,430,159.54
  5. Step 5: Solve for x
    x = 209,854,430,159.54/529,113.06
  6. Step 6: Final answer
    x = 396,615.48

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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.