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Finding the Fourth Proportional to 583,934.40, 805,831.20 and 315,662.40

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Solution

The fourth proportional to 583,934.40, 805,831.20 and 315,662.40 is: 435,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,934.40 : 805,831.20 = 315,662.40 : x
  2. Step 2: Convert to fraction form
    583,934.40/805,831.20 = 315,662.40/x
  3. Step 3: Cross multiply
    583,934.40x = 805,831.20 × 315,662.40
  4. Step 4: Simplify right side
    583,934.40x = 254,370,610,586.88
  5. Step 5: Solve for x
    x = 254,370,610,586.88/583,934.40
  6. Step 6: Final answer
    x = 435,615.05

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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.