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Finding the Fourth Proportional to 443,065.60, 611,349.88 and 249,443.20

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Solution

The fourth proportional to 443,065.60, 611,349.88 and 249,443.20 is: 344,186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,065.60 : 611,349.88 = 249,443.20 : x
  2. Step 2: Convert to fraction form
    443,065.60/611,349.88 = 249,443.20/x
  3. Step 3: Cross multiply
    443,065.60x = 611,349.88 × 249,443.20
  4. Step 4: Simplify right side
    443,065.60x = 152,497,070,386.82
  5. Step 5: Solve for x
    x = 152,497,070,386.82/443,065.60
  6. Step 6: Final answer
    x = 344,186.21

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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.