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Finding the Fourth Proportional to 368,705.12, 508,793.71 and 207,554.81

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Solution

The fourth proportional to 368,705.12, 508,793.71 and 207,554.81 is: 286,414.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,705.12 : 508,793.71 = 207,554.81 : x
  2. Step 2: Convert to fraction form
    368,705.12/508,793.71 = 207,554.81/x
  3. Step 3: Cross multiply
    368,705.12x = 508,793.71 × 207,554.81
  4. Step 4: Simplify right side
    368,705.12x = 105,602,581,808.25
  5. Step 5: Solve for x
    x = 105,602,581,808.25/368,705.12
  6. Step 6: Final answer
    x = 286,414.74

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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.