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Finding the Fourth Proportional to 683,459.79, 943,203.14 and 393,071.55

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Solution

The fourth proportional to 683,459.79, 943,203.14 and 393,071.55 is: 542,455.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,459.79 : 943,203.14 = 393,071.55 : x
  2. Step 2: Convert to fraction form
    683,459.79/943,203.14 = 393,071.55/x
  3. Step 3: Cross multiply
    683,459.79x = 943,203.14 × 393,071.55
  4. Step 4: Simplify right side
    683,459.79x = 370,746,320,204.67
  5. Step 5: Solve for x
    x = 370,746,320,204.67/683,459.79
  6. Step 6: Final answer
    x = 542,455.21

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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.