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Finding the Fourth Proportional to 108,587.10, 162,837.45 and 38,430.30

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Solution

The fourth proportional to 108,587.10, 162,837.45 and 38,430.30 is: 57,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,587.10 : 162,837.45 = 38,430.30 : x
  2. Step 2: Convert to fraction form
    108,587.10/162,837.45 = 38,430.30/x
  3. Step 3: Cross multiply
    108,587.10x = 162,837.45 × 38,430.30
  4. Step 4: Simplify right side
    108,587.10x = 6,257,892,054.74
  5. Step 5: Solve for x
    x = 6,257,892,054.74/108,587.10
  6. Step 6: Final answer
    x = 57,630.16

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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.