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Finding the Fourth Proportional to 163,700.80, 245,551.20 and 156,702.40

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Solution

The fourth proportional to 163,700.80, 245,551.20 and 156,702.40 is: 235,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,700.80 : 245,551.20 = 156,702.40 : x
  2. Step 2: Convert to fraction form
    163,700.80/245,551.20 = 156,702.40/x
  3. Step 3: Cross multiply
    163,700.80x = 245,551.20 × 156,702.40
  4. Step 4: Simplify right side
    163,700.80x = 38,478,462,362.88
  5. Step 5: Solve for x
    x = 38,478,462,362.88/163,700.80
  6. Step 6: Final answer
    x = 235,053.60

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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.