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Finding the Fourth Proportional to 207,985.04, 287,012.74 and 117,339.80

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Solution

The fourth proportional to 207,985.04, 287,012.74 and 117,339.80 is: 161,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,985.04 : 287,012.74 = 117,339.80 : x
  2. Step 2: Convert to fraction form
    207,985.04/287,012.74 = 117,339.80/x
  3. Step 3: Cross multiply
    207,985.04x = 287,012.74 × 117,339.80
  4. Step 4: Simplify right side
    207,985.04x = 33,678,017,509.05
  5. Step 5: Solve for x
    x = 33,678,017,509.05/207,985.04
  6. Step 6: Final answer
    x = 161,925.19

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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.