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Finding the Fourth Proportional to 124,530.16, 171,856.44 and 70,820.08

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Solution

The fourth proportional to 124,530.16, 171,856.44 and 70,820.08 is: 97,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,530.16 : 171,856.44 = 70,820.08 : x
  2. Step 2: Convert to fraction form
    124,530.16/171,856.44 = 70,820.08/x
  3. Step 3: Cross multiply
    124,530.16x = 171,856.44 × 70,820.08
  4. Step 4: Simplify right side
    124,530.16x = 12,170,886,829.32
  5. Step 5: Solve for x
    x = 12,170,886,829.32/124,530.16
  6. Step 6: Final answer
    x = 97,734.45

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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.