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Finding the Fourth Proportional to 98,853.40, 136,417.45 and 53,531.40

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Solution

The fourth proportional to 98,853.40, 136,417.45 and 53,531.40 is: 73,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,853.40 : 136,417.45 = 53,531.40 : x
  2. Step 2: Convert to fraction form
    98,853.40/136,417.45 = 53,531.40/x
  3. Step 3: Cross multiply
    98,853.40x = 136,417.45 × 53,531.40
  4. Step 4: Simplify right side
    98,853.40x = 7,302,617,082.93
  5. Step 5: Solve for x
    x = 7,302,617,082.93/98,853.40
  6. Step 6: Final answer
    x = 73,873.20

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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.