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Finding the Fourth Proportional to 71,357.86, 98,476.62 and 39,526.12

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Solution

The fourth proportional to 71,357.86, 98,476.62 and 39,526.12 is: 54,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,357.86 : 98,476.62 = 39,526.12 : x
  2. Step 2: Convert to fraction form
    71,357.86/98,476.62 = 39,526.12/x
  3. Step 3: Cross multiply
    71,357.86x = 98,476.62 × 39,526.12
  4. Step 4: Simplify right side
    71,357.86x = 3,892,398,699.31
  5. Step 5: Solve for x
    x = 3,892,398,699.31/71,357.86
  6. Step 6: Final answer
    x = 54,547.58

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Double scale
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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.