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Finding the Fourth Proportional to 61,430.70, 84,777.10 and 34,574.95

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Solution

The fourth proportional to 61,430.70, 84,777.10 and 34,574.95 is: 47,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,430.70 : 84,777.10 = 34,574.95 : x
  2. Step 2: Convert to fraction form
    61,430.70/84,777.10 = 34,574.95/x
  3. Step 3: Cross multiply
    61,430.70x = 84,777.10 × 34,574.95
  4. Step 4: Simplify right side
    61,430.70x = 2,931,163,820.77
  5. Step 5: Solve for x
    x = 2,931,163,820.77/61,430.70
  6. Step 6: Final answer
    x = 47,714.97

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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.