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Finding the Fourth Proportional to 353,572.32, 530,358.52 and 291,111.60

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Solution

The fourth proportional to 353,572.32, 530,358.52 and 291,111.60 is: 436,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,572.32 : 530,358.52 = 291,111.60 : x
  2. Step 2: Convert to fraction form
    353,572.32/530,358.52 = 291,111.60/x
  3. Step 3: Cross multiply
    353,572.32x = 530,358.52 × 291,111.60
  4. Step 4: Simplify right side
    353,572.32x = 154,393,517,330.83
  5. Step 5: Solve for x
    x = 154,393,517,330.83/353,572.32
  6. Step 6: Final answer
    x = 436,667.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.