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Finding the Fourth Proportional to 124,417.80, 171,695.70 and 70,698.60

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Solution

The fourth proportional to 124,417.80, 171,695.70 and 70,698.60 is: 97,563.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,417.80 : 171,695.70 = 70,698.60 : x
  2. Step 2: Convert to fraction form
    124,417.80/171,695.70 = 70,698.60/x
  3. Step 3: Cross multiply
    124,417.80x = 171,695.70 × 70,698.60
  4. Step 4: Simplify right side
    124,417.80x = 12,138,645,616.02
  5. Step 5: Solve for x
    x = 12,138,645,616.02/124,417.80
  6. Step 6: Final answer
    x = 97,563.58

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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.