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Finding the Fourth Proportional to 185,705.55, 256,514.06 and 153,569.98

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Solution

The fourth proportional to 185,705.55, 256,514.06 and 153,569.98 is: 212,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,705.55 : 256,514.06 = 153,569.98 : x
  2. Step 2: Convert to fraction form
    185,705.55/256,514.06 = 153,569.98/x
  3. Step 3: Cross multiply
    185,705.55x = 256,514.06 × 153,569.98
  4. Step 4: Simplify right side
    185,705.55x = 39,392,857,461.76
  5. Step 5: Solve for x
    x = 39,392,857,461.76/185,705.55
  6. Step 6: Final answer
    x = 212,125.36

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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.