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Finding the Fourth Proportional to 521,358.88, 719,455.32 and 291,894.70

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Solution

The fourth proportional to 521,358.88, 719,455.32 and 291,894.70 is: 402,803.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,358.88 : 719,455.32 = 291,894.70 : x
  2. Step 2: Convert to fraction form
    521,358.88/719,455.32 = 291,894.70/x
  3. Step 3: Cross multiply
    521,358.88x = 719,455.32 × 291,894.70
  4. Step 4: Simplify right side
    521,358.88x = 210,005,194,090.77
  5. Step 5: Solve for x
    x = 210,005,194,090.77/521,358.88
  6. Step 6: Final answer
    x = 402,803.53

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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.