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Finding the Fourth Proportional to 296,715.34, 445,088.40 and 86,369.68

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Solution

The fourth proportional to 296,715.34, 445,088.40 and 86,369.68 is: 129,559.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,715.34 : 445,088.40 = 86,369.68 : x
  2. Step 2: Convert to fraction form
    296,715.34/445,088.40 = 86,369.68/x
  3. Step 3: Cross multiply
    296,715.34x = 445,088.40 × 86,369.68
  4. Step 4: Simplify right side
    296,715.34x = 38,442,142,679.71
  5. Step 5: Solve for x
    x = 38,442,142,679.71/296,715.34
  6. Step 6: Final answer
    x = 129,559.00

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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.