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Finding the Fourth Proportional to 153,594, 212,030.76 and 108,308.88

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Solution

The fourth proportional to 153,594, 212,030.76 and 108,308.88 is: 149,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,594 : 212,030.76 = 108,308.88 : x
  2. Step 2: Convert to fraction form
    153,594/212,030.76 = 108,308.88/x
  3. Step 3: Cross multiply
    153,594x = 212,030.76 × 108,308.88
  4. Step 4: Simplify right side
    153,594x = 22,964,814,141.15
  5. Step 5: Solve for x
    x = 22,964,814,141.15/153,594
  6. Step 6: Final answer
    x = 149,516.35

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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.