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Finding the Fourth Proportional to 661,000.40, 912,346.44 and 374,691.32

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Solution

The fourth proportional to 661,000.40, 912,346.44 and 374,691.32 is: 517,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,000.40 : 912,346.44 = 374,691.32 : x
  2. Step 2: Convert to fraction form
    661,000.40/912,346.44 = 374,691.32/x
  3. Step 3: Cross multiply
    661,000.40x = 912,346.44 × 374,691.32
  4. Step 4: Simplify right side
    661,000.40x = 341,848,291,900.90
  5. Step 5: Solve for x
    x = 341,848,291,900.90/661,000.40
  6. Step 6: Final answer
    x = 517,168.06

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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.