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Finding the Fourth Proportional to 316,657.32, 475,017.14 and 92,019.72

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Solution

The fourth proportional to 316,657.32, 475,017.14 and 92,019.72 is: 138,038.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,657.32 : 475,017.14 = 92,019.72 : x
  2. Step 2: Convert to fraction form
    316,657.32/475,017.14 = 92,019.72/x
  3. Step 3: Cross multiply
    316,657.32x = 475,017.14 × 92,019.72
  4. Step 4: Simplify right side
    316,657.32x = 43,710,944,218.00
  5. Step 5: Solve for x
    x = 43,710,944,218.00/316,657.32
  6. Step 6: Final answer
    x = 138,038.64

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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.