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Finding the Fourth Proportional to 583,799.72, 805,643.25 and 315,527.72

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Solution

The fourth proportional to 583,799.72, 805,643.25 and 315,527.72 is: 435,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,799.72 : 805,643.25 = 315,527.72 : x
  2. Step 2: Convert to fraction form
    583,799.72/805,643.25 = 315,527.72/x
  3. Step 3: Cross multiply
    583,799.72x = 805,643.25 × 315,527.72
  4. Step 4: Simplify right side
    583,799.72x = 254,202,776,580.60
  5. Step 5: Solve for x
    x = 254,202,776,580.60/583,799.72
  6. Step 6: Final answer
    x = 435,428.06

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Double scale
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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.