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Finding the Fourth Proportional to 103,597.20, 142,963.35 and 58,885.20

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Solution

The fourth proportional to 103,597.20, 142,963.35 and 58,885.20 is: 81,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,597.20 : 142,963.35 = 58,885.20 : x
  2. Step 2: Convert to fraction form
    103,597.20/142,963.35 = 58,885.20/x
  3. Step 3: Cross multiply
    103,597.20x = 142,963.35 × 58,885.20
  4. Step 4: Simplify right side
    103,597.20x = 8,418,425,457.42
  5. Step 5: Solve for x
    x = 8,418,425,457.42/103,597.20
  6. Step 6: Final answer
    x = 81,261.13

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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.