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Finding the Fourth Proportional to 583,443.59, 805,150.95 and 315,171.59

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Solution

The fourth proportional to 583,443.59, 805,150.95 and 315,171.59 is: 434,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,443.59 : 805,150.95 = 315,171.59 : x
  2. Step 2: Convert to fraction form
    583,443.59/805,150.95 = 315,171.59/x
  3. Step 3: Cross multiply
    583,443.59x = 805,150.95 × 315,171.59
  4. Step 4: Simplify right side
    583,443.59x = 253,760,705,101.51
  5. Step 5: Solve for x
    x = 253,760,705,101.51/583,443.59
  6. Step 6: Final answer
    x = 434,936.14

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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.