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Finding the Fourth Proportional to 288,967.66, 433,538.76 and 86,570.35

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Solution

The fourth proportional to 288,967.66, 433,538.76 and 86,570.35 is: 129,881.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,967.66 : 433,538.76 = 86,570.35 : x
  2. Step 2: Convert to fraction form
    288,967.66/433,538.76 = 86,570.35/x
  3. Step 3: Cross multiply
    288,967.66x = 433,538.76 × 86,570.35
  4. Step 4: Simplify right side
    288,967.66x = 37,531,602,191.77
  5. Step 5: Solve for x
    x = 37,531,602,191.77/288,967.66
  6. Step 6: Final answer
    x = 129,881.67

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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.