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Finding the Fourth Proportional to 708,258.38, 977,368.13 and 385,961.61

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Solution

The fourth proportional to 708,258.38, 977,368.13 and 385,961.61 is: 532,611.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,258.38 : 977,368.13 = 385,961.61 : x
  2. Step 2: Convert to fraction form
    708,258.38/977,368.13 = 385,961.61/x
  3. Step 3: Cross multiply
    708,258.38x = 977,368.13 × 385,961.61
  4. Step 4: Simplify right side
    708,258.38x = 377,226,576,535.04
  5. Step 5: Solve for x
    x = 377,226,576,535.04/708,258.38
  6. Step 6: Final answer
    x = 532,611.52

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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.