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Finding the Fourth Proportional to 123,838.01, 170,897.11 and 70,133.48

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Solution

The fourth proportional to 123,838.01, 170,897.11 and 70,133.48 is: 96,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,838.01 : 170,897.11 = 70,133.48 : x
  2. Step 2: Convert to fraction form
    123,838.01/170,897.11 = 70,133.48/x
  3. Step 3: Cross multiply
    123,838.01x = 170,897.11 × 70,133.48
  4. Step 4: Simplify right side
    123,838.01x = 11,985,609,046.24
  5. Step 5: Solve for x
    x = 11,985,609,046.24/123,838.01
  6. Step 6: Final answer
    x = 96,784.57

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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.