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Finding the Fourth Proportional to 442,790.16, 611,047.32 and 251,803.50

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Solution

The fourth proportional to 442,790.16, 611,047.32 and 251,803.50 is: 347,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,790.16 : 611,047.32 = 251,803.50 : x
  2. Step 2: Convert to fraction form
    442,790.16/611,047.32 = 251,803.50/x
  3. Step 3: Cross multiply
    442,790.16x = 611,047.32 × 251,803.50
  4. Step 4: Simplify right side
    442,790.16x = 153,863,853,841.62
  5. Step 5: Solve for x
    x = 153,863,853,841.62/442,790.16
  6. Step 6: Final answer
    x = 347,487.07

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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.