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Finding the Fourth Proportional to 530,247.89, 731,735.93 and 288,526.31

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Solution

The fourth proportional to 530,247.89, 731,735.93 and 288,526.31 is: 398,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,247.89 : 731,735.93 = 288,526.31 : x
  2. Step 2: Convert to fraction form
    530,247.89/731,735.93 = 288,526.31/x
  3. Step 3: Cross multiply
    530,247.89x = 731,735.93 × 288,526.31
  4. Step 4: Simplify right side
    530,247.89x = 211,125,064,839.95
  5. Step 5: Solve for x
    x = 211,125,064,839.95/530,247.89
  6. Step 6: Final answer
    x = 398,162.95

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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.