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Finding the Fourth Proportional to 530,496.36, 732,085.06 and 288,780.77

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Solution

The fourth proportional to 530,496.36, 732,085.06 and 288,780.77 is: 398,517.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,496.36 : 732,085.06 = 288,780.77 : x
  2. Step 2: Convert to fraction form
    530,496.36/732,085.06 = 288,780.77/x
  3. Step 3: Cross multiply
    530,496.36x = 732,085.06 × 288,780.77
  4. Step 4: Simplify right side
    530,496.36x = 211,412,085,695.24
  5. Step 5: Solve for x
    x = 211,412,085,695.24/530,496.36
  6. Step 6: Final answer
    x = 398,517.50

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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.