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Finding the Fourth Proportional to 31,398.60, 47,068.62 and 10,607.56

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Solution

The fourth proportional to 31,398.60, 47,068.62 and 10,607.56 is: 15,901.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,398.60 : 47,068.62 = 10,607.56 : x
  2. Step 2: Convert to fraction form
    31,398.60/47,068.62 = 10,607.56/x
  3. Step 3: Cross multiply
    31,398.60x = 47,068.62 × 10,607.56
  4. Step 4: Simplify right side
    31,398.60x = 499,283,210.77
  5. Step 5: Solve for x
    x = 499,283,210.77/31,398.60
  6. Step 6: Final answer
    x = 15,901.45

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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.