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Finding the Fourth Proportional to 170,312.79, 235,031.72 and 98,734.31

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Solution

The fourth proportional to 170,312.79, 235,031.72 and 98,734.31 is: 136,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,312.79 : 235,031.72 = 98,734.31 : x
  2. Step 2: Convert to fraction form
    170,312.79/235,031.72 = 98,734.31/x
  3. Step 3: Cross multiply
    170,312.79x = 235,031.72 × 98,734.31
  4. Step 4: Simplify right side
    170,312.79x = 23,205,693,033.48
  5. Step 5: Solve for x
    x = 23,205,693,033.48/170,312.79
  6. Step 6: Final answer
    x = 136,253.38

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1.5x scale

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.