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Finding the Fourth Proportional to 520,645.66, 781,066.29 and 236,356.18

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Solution

The fourth proportional to 520,645.66, 781,066.29 and 236,356.18 is: 354,578.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,645.66 : 781,066.29 = 236,356.18 : x
  2. Step 2: Convert to fraction form
    520,645.66/781,066.29 = 236,356.18/x
  3. Step 3: Cross multiply
    520,645.66x = 781,066.29 × 236,356.18
  4. Step 4: Simplify right side
    520,645.66x = 184,609,844,631.17
  5. Step 5: Solve for x
    x = 184,609,844,631.17/520,645.66
  6. Step 6: Final answer
    x = 354,578.67

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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.