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Finding the Fourth Proportional to 207,886.40, 286,883.46 and 112,393.10

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Solution

The fourth proportional to 207,886.40, 286,883.46 and 112,393.10 is: 155,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,886.40 : 286,883.46 = 112,393.10 : x
  2. Step 2: Convert to fraction form
    207,886.40/286,883.46 = 112,393.10/x
  3. Step 3: Cross multiply
    207,886.40x = 286,883.46 × 112,393.10
  4. Step 4: Simplify right side
    207,886.40x = 32,243,721,408.13
  5. Step 5: Solve for x
    x = 32,243,721,408.13/207,886.40
  6. Step 6: Final answer
    x = 155,102.60

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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.