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Finding the Fourth Proportional to 583,955.76, 805,856.76 and 315,683.76

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Solution

The fourth proportional to 583,955.76, 805,856.76 and 315,683.76 is: 435,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,955.76 : 805,856.76 = 315,683.76 : x
  2. Step 2: Convert to fraction form
    583,955.76/805,856.76 = 315,683.76/x
  3. Step 3: Cross multiply
    583,955.76x = 805,856.76 × 315,683.76
  4. Step 4: Simplify right side
    583,955.76x = 254,395,892,018.22
  5. Step 5: Solve for x
    x = 254,395,892,018.22/583,955.76
  6. Step 6: Final answer
    x = 435,642.41

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.