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Finding the Fourth Proportional to 60,681.76, 90,984.60 and 18,547.84

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Solution

The fourth proportional to 60,681.76, 90,984.60 and 18,547.84 is: 27,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,681.76 : 90,984.60 = 18,547.84 : x
  2. Step 2: Convert to fraction form
    60,681.76/90,984.60 = 18,547.84/x
  3. Step 3: Cross multiply
    60,681.76x = 90,984.60 × 18,547.84
  4. Step 4: Simplify right side
    60,681.76x = 1,687,567,803.26
  5. Step 5: Solve for x
    x = 1,687,567,803.26/60,681.76
  6. Step 6: Final answer
    x = 27,810.13

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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.