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Finding the Fourth Proportional to 316,030.16, 473,975.04 and 91,341.56

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Solution

The fourth proportional to 316,030.16, 473,975.04 and 91,341.56 is: 136,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,030.16 : 473,975.04 = 91,341.56 : x
  2. Step 2: Convert to fraction form
    316,030.16/473,975.04 = 91,341.56/x
  3. Step 3: Cross multiply
    316,030.16x = 473,975.04 × 91,341.56
  4. Step 4: Simplify right side
    316,030.16x = 43,293,619,554.66
  5. Step 5: Solve for x
    x = 43,293,619,554.66/316,030.16
  6. Step 6: Final answer
    x = 136,992.05

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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.