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Finding the Fourth Proportional to 527,639.16, 728,177.76 and 298,116.84

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Solution

The fourth proportional to 527,639.16, 728,177.76 and 298,116.84 is: 411,421.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,639.16 : 728,177.76 = 298,116.84 : x
  2. Step 2: Convert to fraction form
    527,639.16/728,177.76 = 298,116.84/x
  3. Step 3: Cross multiply
    527,639.16x = 728,177.76 × 298,116.84
  4. Step 4: Simplify right side
    527,639.16x = 217,082,052,769.48
  5. Step 5: Solve for x
    x = 217,082,052,769.48/527,639.16
  6. Step 6: Final answer
    x = 411,421.42

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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.