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Finding the Fourth Proportional to 633,156.39, 873,777.78 and 346,678.43

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Solution

The fourth proportional to 633,156.39, 873,777.78 and 346,678.43 is: 478,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,156.39 : 873,777.78 = 346,678.43 : x
  2. Step 2: Convert to fraction form
    633,156.39/873,777.78 = 346,678.43/x
  3. Step 3: Cross multiply
    633,156.39x = 873,777.78 × 346,678.43
  4. Step 4: Simplify right side
    633,156.39x = 302,919,904,570.40
  5. Step 5: Solve for x
    x = 302,919,904,570.40/633,156.39
  6. Step 6: Final answer
    x = 478,428.25

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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.