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Finding the Fourth Proportional to 611,453.78, 916,181.89 and 371,641.03

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Solution

The fourth proportional to 611,453.78, 916,181.89 and 371,641.03 is: 556,854.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,453.78 : 916,181.89 = 371,641.03 : x
  2. Step 2: Convert to fraction form
    611,453.78/916,181.89 = 371,641.03/x
  3. Step 3: Cross multiply
    611,453.78x = 916,181.89 × 371,641.03
  4. Step 4: Simplify right side
    611,453.78x = 340,490,778,047.39
  5. Step 5: Solve for x
    x = 340,490,778,047.39/611,453.78
  6. Step 6: Final answer
    x = 556,854.48

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1.5x scale

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.