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Finding the Fourth Proportional to 584,030.76, 805,963.66 and 315,758.76

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Solution

The fourth proportional to 584,030.76, 805,963.66 and 315,758.76 is: 435,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,030.76 : 805,963.66 = 315,758.76 : x
  2. Step 2: Convert to fraction form
    584,030.76/805,963.66 = 315,758.76/x
  3. Step 3: Cross multiply
    584,030.76x = 805,963.66 × 315,758.76
  4. Step 4: Simplify right side
    584,030.76x = 254,490,085,886.66
  5. Step 5: Solve for x
    x = 254,490,085,886.66/584,030.76
  6. Step 6: Final answer
    x = 435,747.74

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Half scale
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Double scale
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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.