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Finding the Fourth Proportional to 153,783.16, 212,235.60 and 93,339.88

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Solution

The fourth proportional to 153,783.16, 212,235.60 and 93,339.88 is: 128,818.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,783.16 : 212,235.60 = 93,339.88 : x
  2. Step 2: Convert to fraction form
    153,783.16/212,235.60 = 93,339.88/x
  3. Step 3: Cross multiply
    153,783.16x = 212,235.60 × 93,339.88
  4. Step 4: Simplify right side
    153,783.16x = 19,810,045,435.73
  5. Step 5: Solve for x
    x = 19,810,045,435.73/153,783.16
  6. Step 6: Final answer
    x = 128,818.04

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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.