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Finding the Fourth Proportional to 530,281.25, 731,788.25 and 291,817.25

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Solution

The fourth proportional to 530,281.25, 731,788.25 and 291,817.25 is: 402,707.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,281.25 : 731,788.25 = 291,817.25 : x
  2. Step 2: Convert to fraction form
    530,281.25/731,788.25 = 291,817.25/x
  3. Step 3: Cross multiply
    530,281.25x = 731,788.25 × 291,817.25
  4. Step 4: Simplify right side
    530,281.25x = 213,548,433,238.23
  5. Step 5: Solve for x
    x = 213,548,433,238.23/530,281.25
  6. Step 6: Final answer
    x = 402,707.87

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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.