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Finding the Fourth Proportional to 154,294.98, 212,917.02 and 86,300.16

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Solution

The fourth proportional to 154,294.98, 212,917.02 and 86,300.16 is: 119,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,294.98 : 212,917.02 = 86,300.16 : x
  2. Step 2: Convert to fraction form
    154,294.98/212,917.02 = 86,300.16/x
  3. Step 3: Cross multiply
    154,294.98x = 212,917.02 × 86,300.16
  4. Step 4: Simplify right side
    154,294.98x = 18,374,772,892.72
  5. Step 5: Solve for x
    x = 18,374,772,892.72/154,294.98
  6. Step 6: Final answer
    x = 119,088.60

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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.