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Finding the Fourth Proportional to 583,909.30, 805,795.05 and 315,637.30

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Solution

The fourth proportional to 583,909.30, 805,795.05 and 315,637.30 is: 435,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,909.30 : 805,795.05 = 315,637.30 : x
  2. Step 2: Convert to fraction form
    583,909.30/805,795.05 = 315,637.30/x
  3. Step 3: Cross multiply
    583,909.30x = 805,795.05 × 315,637.30
  4. Step 4: Simplify right side
    583,909.30x = 254,338,973,935.37
  5. Step 5: Solve for x
    x = 254,338,973,935.37/583,909.30
  6. Step 6: Final answer
    x = 435,579.59

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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.