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Finding the Fourth Proportional to 402,894.51, 604,276.08 and 118,518.55

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Solution

The fourth proportional to 402,894.51, 604,276.08 and 118,518.55 is: 177,758.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,894.51 : 604,276.08 = 118,518.55 : x
  2. Step 2: Convert to fraction form
    402,894.51/604,276.08 = 118,518.55/x
  3. Step 3: Cross multiply
    402,894.51x = 604,276.08 × 118,518.55
  4. Step 4: Simplify right side
    402,894.51x = 71,617,924,801.28
  5. Step 5: Solve for x
    x = 71,617,924,801.28/402,894.51
  6. Step 6: Final answer
    x = 177,758.50

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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.