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Finding the Fourth Proportional to 73,438.31, 101,345.51 and 39,904.31

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Solution

The fourth proportional to 73,438.31, 101,345.51 and 39,904.31 is: 55,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,438.31 : 101,345.51 = 39,904.31 : x
  2. Step 2: Convert to fraction form
    73,438.31/101,345.51 = 39,904.31/x
  3. Step 3: Cross multiply
    73,438.31x = 101,345.51 × 39,904.31
  4. Step 4: Simplify right side
    73,438.31x = 4,044,123,001.27
  5. Step 5: Solve for x
    x = 4,044,123,001.27/73,438.31
  6. Step 6: Final answer
    x = 55,068.30

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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.