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Finding the Fourth Proportional to 391,259, 585,931.36 and 353,393.36

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Solution

The fourth proportional to 391,259, 585,931.36 and 353,393.36 is: 529,225.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,259 : 585,931.36 = 353,393.36 : x
  2. Step 2: Convert to fraction form
    391,259/585,931.36 = 353,393.36/x
  3. Step 3: Cross multiply
    391,259x = 585,931.36 × 353,393.36
  4. Step 4: Simplify right side
    391,259x = 207,064,252,039.77
  5. Step 5: Solve for x
    x = 207,064,252,039.77/391,259
  6. Step 6: Final answer
    x = 529,225.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.