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Finding the Fourth Proportional to 530,277, 731,782.38 and 291,813

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Solution

The fourth proportional to 530,277, 731,782.38 and 291,813 is: 402,702.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,277 : 731,782.38 = 291,813 : x
  2. Step 2: Convert to fraction form
    530,277/731,782.38 = 291,813/x
  3. Step 3: Cross multiply
    530,277x = 731,782.38 × 291,813
  4. Step 4: Simplify right side
    530,277x = 213,543,611,654.94
  5. Step 5: Solve for x
    x = 213,543,611,654.94/530,277
  6. Step 6: Final answer
    x = 402,702.01

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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.