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Finding the Fourth Proportional to 120,058.55, 165,683.93 and 65,613.04

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Solution

The fourth proportional to 120,058.55, 165,683.93 and 65,613.04 is: 90,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,058.55 : 165,683.93 = 65,613.04 : x
  2. Step 2: Convert to fraction form
    120,058.55/165,683.93 = 65,613.04/x
  3. Step 3: Cross multiply
    120,058.55x = 165,683.93 × 65,613.04
  4. Step 4: Simplify right side
    120,058.55x = 10,871,025,953.25
  5. Step 5: Solve for x
    x = 10,871,025,953.25/120,058.55
  6. Step 6: Final answer
    x = 90,547.70

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1.5x scale

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.