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Finding the Fourth Proportional to 516,165.40, 774,248.10 and 358,701.40

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Solution

The fourth proportional to 516,165.40, 774,248.10 and 358,701.40 is: 538,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,165.40 : 774,248.10 = 358,701.40 : x
  2. Step 2: Convert to fraction form
    516,165.40/774,248.10 = 358,701.40/x
  3. Step 3: Cross multiply
    516,165.40x = 774,248.10 × 358,701.40
  4. Step 4: Simplify right side
    516,165.40x = 277,723,877,417.34
  5. Step 5: Solve for x
    x = 277,723,877,417.34/516,165.40
  6. Step 6: Final answer
    x = 538,052.10

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Half scale
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Double scale
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Similar ratio
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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.