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Finding the Fourth Proportional to 583,812.66, 805,661.10 and 315,540.66

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Solution

The fourth proportional to 583,812.66, 805,661.10 and 315,540.66 is: 435,445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,812.66 : 805,661.10 = 315,540.66 : x
  2. Step 2: Convert to fraction form
    583,812.66/805,661.10 = 315,540.66/x
  3. Step 3: Cross multiply
    583,812.66x = 805,661.10 × 315,540.66
  4. Step 4: Simplify right side
    583,812.66x = 254,218,835,230.33
  5. Step 5: Solve for x
    x = 254,218,835,230.33/583,812.66
  6. Step 6: Final answer
    x = 435,445.91

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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.