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Finding the Fourth Proportional to 124,686.63, 172,068.65 and 70,975.10

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Solution

The fourth proportional to 124,686.63, 172,068.65 and 70,975.10 is: 97,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,686.63 : 172,068.65 = 70,975.10 : x
  2. Step 2: Convert to fraction form
    124,686.63/172,068.65 = 70,975.10/x
  3. Step 3: Cross multiply
    124,686.63x = 172,068.65 × 70,975.10
  4. Step 4: Simplify right side
    124,686.63x = 12,212,589,640.62
  5. Step 5: Solve for x
    x = 12,212,589,640.62/124,686.63
  6. Step 6: Final answer
    x = 97,946.26

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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.