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Finding the Fourth Proportional to 292,032.40, 402,928.55 and 171,108.71

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Solution

The fourth proportional to 292,032.40, 402,928.55 and 171,108.71 is: 236,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,032.40 : 402,928.55 = 171,108.71 : x
  2. Step 2: Convert to fraction form
    292,032.40/402,928.55 = 171,108.71/x
  3. Step 3: Cross multiply
    292,032.40x = 402,928.55 × 171,108.71
  4. Step 4: Simplify right side
    292,032.40x = 68,944,585,419.99
  5. Step 5: Solve for x
    x = 68,944,585,419.99/292,032.40
  6. Step 6: Final answer
    x = 236,085.40

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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.