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Finding the Fourth Proportional to 527,038.63, 790,555.11 and 127,679.20

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Solution

The fourth proportional to 527,038.63, 790,555.11 and 127,679.20 is: 191,518.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,038.63 : 790,555.11 = 127,679.20 : x
  2. Step 2: Convert to fraction form
    527,038.63/790,555.11 = 127,679.20/x
  3. Step 3: Cross multiply
    527,038.63x = 790,555.11 × 127,679.20
  4. Step 4: Simplify right side
    527,038.63x = 100,937,444,000.71
  5. Step 5: Solve for x
    x = 100,937,444,000.71/527,038.63
  6. Step 6: Final answer
    x = 191,518.11

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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.