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Finding the Fourth Proportional to 366,907.80, 549,681.30 and 208,666.20

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Solution

The fourth proportional to 366,907.80, 549,681.30 and 208,666.20 is: 312,612.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,907.80 : 549,681.30 = 208,666.20 : x
  2. Step 2: Convert to fraction form
    366,907.80/549,681.30 = 208,666.20/x
  3. Step 3: Cross multiply
    366,907.80x = 549,681.30 × 208,666.20
  4. Step 4: Simplify right side
    366,907.80x = 114,699,908,082.06
  5. Step 5: Solve for x
    x = 114,699,908,082.06/366,907.80
  6. Step 6: Final answer
    x = 312,612.35

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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.