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Finding the Fourth Proportional to 612,534.72, 918,801.80 and 186,068.90

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Solution

The fourth proportional to 612,534.72, 918,801.80 and 186,068.90 is: 279,103.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,534.72 : 918,801.80 = 186,068.90 : x
  2. Step 2: Convert to fraction form
    612,534.72/918,801.80 = 186,068.90/x
  3. Step 3: Cross multiply
    612,534.72x = 918,801.80 × 186,068.90
  4. Step 4: Simplify right side
    612,534.72x = 170,960,437,140.18
  5. Step 5: Solve for x
    x = 170,960,437,140.18/612,534.72
  6. Step 6: Final answer
    x = 279,103.26

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1.5x scale

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.