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Finding the Fourth Proportional to 285,274.71, 393,683.94 and 156,211.13

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Solution

The fourth proportional to 285,274.71, 393,683.94 and 156,211.13 is: 215,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,274.71 : 393,683.94 = 156,211.13 : x
  2. Step 2: Convert to fraction form
    285,274.71/393,683.94 = 156,211.13/x
  3. Step 3: Cross multiply
    285,274.71x = 393,683.94 × 156,211.13
  4. Step 4: Simplify right side
    285,274.71x = 61,497,811,513.34
  5. Step 5: Solve for x
    x = 61,497,811,513.34/285,274.71
  6. Step 6: Final answer
    x = 215,574.00

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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.