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Finding the Fourth Proportional to 545,354.34, 818,405.21 and 190,368.42

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Solution

The fourth proportional to 545,354.34, 818,405.21 and 190,368.42 is: 285,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,354.34 : 818,405.21 = 190,368.42 : x
  2. Step 2: Convert to fraction form
    545,354.34/818,405.21 = 190,368.42/x
  3. Step 3: Cross multiply
    545,354.34x = 818,405.21 × 190,368.42
  4. Step 4: Simplify right side
    545,354.34x = 155,798,506,747.47
  5. Step 5: Solve for x
    x = 155,798,506,747.47/545,354.34
  6. Step 6: Final answer
    x = 285,683.08

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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.