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Finding the Fourth Proportional to 347,681.20, 521,521.80 and 111,031.60

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Solution

The fourth proportional to 347,681.20, 521,521.80 and 111,031.60 is: 166,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,681.20 : 521,521.80 = 111,031.60 : x
  2. Step 2: Convert to fraction form
    347,681.20/521,521.80 = 111,031.60/x
  3. Step 3: Cross multiply
    347,681.20x = 521,521.80 × 111,031.60
  4. Step 4: Simplify right side
    347,681.20x = 57,905,399,888.88
  5. Step 5: Solve for x
    x = 57,905,399,888.88/347,681.20
  6. Step 6: Final answer
    x = 166,547.40

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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.