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Finding the Fourth Proportional to 163,613.70, 245,420.55 and 156,701.70

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Solution

The fourth proportional to 163,613.70, 245,420.55 and 156,701.70 is: 235,052.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,613.70 : 245,420.55 = 156,701.70 : x
  2. Step 2: Convert to fraction form
    163,613.70/245,420.55 = 156,701.70/x
  3. Step 3: Cross multiply
    163,613.70x = 245,420.55 × 156,701.70
  4. Step 4: Simplify right side
    163,613.70x = 38,457,817,399.94
  5. Step 5: Solve for x
    x = 38,457,817,399.94/163,613.70
  6. Step 6: Final answer
    x = 235,052.55

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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.