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Finding the Fourth Proportional to 529,573.80, 730,816.20 and 287,856.30

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Solution

The fourth proportional to 529,573.80, 730,816.20 and 287,856.30 is: 397,244.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,573.80 : 730,816.20 = 287,856.30 : x
  2. Step 2: Convert to fraction form
    529,573.80/730,816.20 = 287,856.30/x
  3. Step 3: Cross multiply
    529,573.80x = 730,816.20 × 287,856.30
  4. Step 4: Simplify right side
    529,573.80x = 210,370,047,312.06
  5. Step 5: Solve for x
    x = 210,370,047,312.06/529,573.80
  6. Step 6: Final answer
    x = 397,244.06

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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.