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Finding the Fourth Proportional to 98,967.40, 136,572.42 and 53,643.40

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Solution

The fourth proportional to 98,967.40, 136,572.42 and 53,643.40 is: 74,026.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,967.40 : 136,572.42 = 53,643.40 : x
  2. Step 2: Convert to fraction form
    98,967.40/136,572.42 = 53,643.40/x
  3. Step 3: Cross multiply
    98,967.40x = 136,572.42 × 53,643.40
  4. Step 4: Simplify right side
    98,967.40x = 7,326,208,955.03
  5. Step 5: Solve for x
    x = 7,326,208,955.03/98,967.40
  6. Step 6: Final answer
    x = 74,026.49

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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.