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Finding the Fourth Proportional to 61,271.52, 84,543.80 and 34,415.16

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Solution

The fourth proportional to 61,271.52, 84,543.80 and 34,415.16 is: 47,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,271.52 : 84,543.80 = 34,415.16 : x
  2. Step 2: Convert to fraction form
    61,271.52/84,543.80 = 34,415.16/x
  3. Step 3: Cross multiply
    61,271.52x = 84,543.80 × 34,415.16
  4. Step 4: Simplify right side
    61,271.52x = 2,909,588,231.93
  5. Step 5: Solve for x
    x = 2,909,588,231.93/61,271.52
  6. Step 6: Final answer
    x = 47,486.80

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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.