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Finding the Fourth Proportional to 163,698.30, 245,547.45 and 156,699.90

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Solution

The fourth proportional to 163,698.30, 245,547.45 and 156,699.90 is: 235,049.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,698.30 : 245,547.45 = 156,699.90 : x
  2. Step 2: Convert to fraction form
    163,698.30/245,547.45 = 156,699.90/x
  3. Step 3: Cross multiply
    163,698.30x = 245,547.45 × 156,699.90
  4. Step 4: Simplify right side
    163,698.30x = 38,477,260,860.26
  5. Step 5: Solve for x
    x = 38,477,260,860.26/163,698.30
  6. Step 6: Final answer
    x = 235,049.85

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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.