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Finding the Fourth Proportional to 521,000.36, 719,019.12 and 291,580.64

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Solution

The fourth proportional to 521,000.36, 719,019.12 and 291,580.64 is: 402,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,000.36 : 719,019.12 = 291,580.64 : x
  2. Step 2: Convert to fraction form
    521,000.36/719,019.12 = 291,580.64/x
  3. Step 3: Cross multiply
    521,000.36x = 719,019.12 × 291,580.64
  4. Step 4: Simplify right side
    521,000.36x = 209,652,055,181.84
  5. Step 5: Solve for x
    x = 209,652,055,181.84/521,000.36
  6. Step 6: Final answer
    x = 402,402.90

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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.