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Finding the Fourth Proportional to 286,627.36, 430,018.80 and 99,653.44

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Solution

The fourth proportional to 286,627.36, 430,018.80 and 99,653.44 is: 149,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,627.36 : 430,018.80 = 99,653.44 : x
  2. Step 2: Convert to fraction form
    286,627.36/430,018.80 = 99,653.44/x
  3. Step 3: Cross multiply
    286,627.36x = 430,018.80 × 99,653.44
  4. Step 4: Simplify right side
    286,627.36x = 42,852,852,684.67
  5. Step 5: Solve for x
    x = 42,852,852,684.67/286,627.36
  6. Step 6: Final answer
    x = 149,507.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.