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Finding the Fourth Proportional to 612,642.58, 917,082.83 and 554,905.78

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Solution

The fourth proportional to 612,642.58, 917,082.83 and 554,905.78 is: 830,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,642.58 : 917,082.83 = 554,905.78 : x
  2. Step 2: Convert to fraction form
    612,642.58/917,082.83 = 554,905.78/x
  3. Step 3: Cross multiply
    612,642.58x = 917,082.83 × 554,905.78
  4. Step 4: Simplify right side
    612,642.58x = 508,894,558,520.34
  5. Step 5: Solve for x
    x = 508,894,558,520.34/612,642.58
  6. Step 6: Final answer
    x = 830,654.90

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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.