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Finding the Fourth Proportional to 521,244.45, 719,385.12 and 291,889.08

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Solution

The fourth proportional to 521,244.45, 719,385.12 and 291,889.08 is: 402,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,244.45 : 719,385.12 = 291,889.08 : x
  2. Step 2: Convert to fraction form
    521,244.45/719,385.12 = 291,889.08/x
  3. Step 3: Cross multiply
    521,244.45x = 719,385.12 × 291,889.08
  4. Step 4: Simplify right side
    521,244.45x = 209,980,660,842.49
  5. Step 5: Solve for x
    x = 209,980,660,842.49/521,244.45
  6. Step 6: Final answer
    x = 402,844.89

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Double scale
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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.