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Finding the Fourth Proportional to 261,095.67, 391,646.93 and 83,602.67

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Solution

The fourth proportional to 261,095.67, 391,646.93 and 83,602.67 is: 125,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,095.67 : 391,646.93 = 83,602.67 : x
  2. Step 2: Convert to fraction form
    261,095.67/391,646.93 = 83,602.67/x
  3. Step 3: Cross multiply
    261,095.67x = 391,646.93 × 83,602.67
  4. Step 4: Simplify right side
    261,095.67x = 32,742,726,669.06
  5. Step 5: Solve for x
    x = 32,742,726,669.06/261,095.67
  6. Step 6: Final answer
    x = 125,405.09

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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.