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Finding the Fourth Proportional to 529,362.83, 730,521.63 and 287,648.30

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Solution

The fourth proportional to 529,362.83, 730,521.63 and 287,648.30 is: 396,955.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,362.83 : 730,521.63 = 287,648.30 : x
  2. Step 2: Convert to fraction form
    529,362.83/730,521.63 = 287,648.30/x
  3. Step 3: Cross multiply
    529,362.83x = 730,521.63 × 287,648.30
  4. Step 4: Simplify right side
    529,362.83x = 210,133,301,330.12
  5. Step 5: Solve for x
    x = 210,133,301,330.12/529,362.83
  6. Step 6: Final answer
    x = 396,955.15

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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.