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Finding the Fourth Proportional to 514,421.80, 771,632.70 and 177,461.80

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Solution

The fourth proportional to 514,421.80, 771,632.70 and 177,461.80 is: 266,192.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,421.80 : 771,632.70 = 177,461.80 : x
  2. Step 2: Convert to fraction form
    514,421.80/771,632.70 = 177,461.80/x
  3. Step 3: Cross multiply
    514,421.80x = 771,632.70 × 177,461.80
  4. Step 4: Simplify right side
    514,421.80x = 136,935,327,880.86
  5. Step 5: Solve for x
    x = 136,935,327,880.86/514,421.80
  6. Step 6: Final answer
    x = 266,192.70

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Similar ratio
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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.