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Finding the Fourth Proportional to 153,392.84, 211,707.95 and 98,929.69

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Solution

The fourth proportional to 153,392.84, 211,707.95 and 98,929.69 is: 136,539.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,392.84 : 211,707.95 = 98,929.69 : x
  2. Step 2: Convert to fraction form
    153,392.84/211,707.95 = 98,929.69/x
  3. Step 3: Cross multiply
    153,392.84x = 211,707.95 × 98,929.69
  4. Step 4: Simplify right side
    153,392.84x = 20,944,200,840.12
  5. Step 5: Solve for x
    x = 20,944,200,840.12/153,392.84
  6. Step 6: Final answer
    x = 136,539.63

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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.