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Finding the Fourth Proportional to 583,352.38, 805,026.82 and 315,080.38

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Solution

The fourth proportional to 583,352.38, 805,026.82 and 315,080.38 is: 434,811.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,352.38 : 805,026.82 = 315,080.38 : x
  2. Step 2: Convert to fraction form
    583,352.38/805,026.82 = 315,080.38/x
  3. Step 3: Cross multiply
    583,352.38x = 805,026.82 × 315,080.38
  4. Step 4: Simplify right side
    583,352.38x = 253,648,156,355.79
  5. Step 5: Solve for x
    x = 253,648,156,355.79/583,352.38
  6. Step 6: Final answer
    x = 434,811.21

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Double scale
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Similar ratio
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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.