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Finding the Fourth Proportional to 70,365.13, 105,547.90 and 17,056.90

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Solution

The fourth proportional to 70,365.13, 105,547.90 and 17,056.90 is: 25,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,365.13 : 105,547.90 = 17,056.90 : x
  2. Step 2: Convert to fraction form
    70,365.13/105,547.90 = 17,056.90/x
  3. Step 3: Cross multiply
    70,365.13x = 105,547.90 × 17,056.90
  4. Step 4: Simplify right side
    70,365.13x = 1,800,320,143.63
  5. Step 5: Solve for x
    x = 1,800,320,143.63/70,365.13
  6. Step 6: Final answer
    x = 25,585.40

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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.