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Finding the Fourth Proportional to 175,323.40, 262,985.10 and 86,590.60

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Solution

The fourth proportional to 175,323.40, 262,985.10 and 86,590.60 is: 129,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,323.40 : 262,985.10 = 86,590.60 : x
  2. Step 2: Convert to fraction form
    175,323.40/262,985.10 = 86,590.60/x
  3. Step 3: Cross multiply
    175,323.40x = 262,985.10 × 86,590.60
  4. Step 4: Simplify right side
    175,323.40x = 22,772,037,600.06
  5. Step 5: Solve for x
    x = 22,772,037,600.06/175,323.40
  6. Step 6: Final answer
    x = 129,885.90

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1.5x scale

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.