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Finding the Fourth Proportional to 93,810.60, 129,454.74 and 51,368.40

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Solution

The fourth proportional to 93,810.60, 129,454.74 and 51,368.40 is: 70,886.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,810.60 : 129,454.74 = 51,368.40 : x
  2. Step 2: Convert to fraction form
    93,810.60/129,454.74 = 51,368.40/x
  3. Step 3: Cross multiply
    93,810.60x = 129,454.74 × 51,368.40
  4. Step 4: Simplify right side
    93,810.60x = 6,649,882,866.22
  5. Step 5: Solve for x
    x = 6,649,882,866.22/93,810.60
  6. Step 6: Final answer
    x = 70,886.26

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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.